Hi. I just wanted to post a short reply to your question about a pull-slice. Although I agree with the previous response to some degree, the stiffness of your shafts will matter more than the make of them alone. I play with stiff steel shafts for my irons and proforce gold shafts (also stiff) for my woods. While there is a difference in weight, the shaft alone is not typically the sole cause of of a pull or a slice (or hook/push for that matter). The problem generally lies in swing technique. A pull and slice are from the same family...both are caused by an out-to-in motion of the clubhead as it approaches the ball from impact. A pull results from hitting the ball on an out-to-in path with a closed clubface and typically travels quite far to the left (for a right hander). A slice occurs when the clubface travelling on the out-to-in path is open at impact, imparting side spin on the golf ball and causing it to travel to the right. It is important to see what "kind" of slice you are hitting (e.g. does it look like a big fade where it starts to the left of the target and goes right, or does it start on or right of the target line and fly further off line). Knowing this will help you identify your faults in the swing.
Another issue to note about pulling/slicing is that the lower the loft on your clubs, the more pronounced the slicing action will be...that is, the more sidespin you will impart on the ball. Thus, many people have a much more pronounced slice when hitting the woods than the irons. This may be the case for you. Something else you mentioned that I want to address is the "worm-burners" and "sky" shots you are hitting from the tee. Take a look at your ball height on the tee when you tee it up. You should be able to see about 1/2 of the ball above the top of the club when using a driver off the tee. If you keep your spine-angle constant throughout the swing, and make a nice "sweeping" swing with the woods, you should be able to eliminate these type of errors. A last note about slicing...make sure your alignment to the ball is correct. Many slicers are aligned to the left of the target at address in an attempt to compensate for a slice. This usually exagerates a slice and makes it worse, or, if you pull the shot, you are left with a long and very offline shot. So check your alignment with a club on the ground at your toes when practicing to see that you are parallel to the intended target line.
I struggled with the slice early on in my golfing days, so I will leave you with three drills for helping you cure the pull/slice. They all rely on training your body to swing more inside-out.
1. Training an in-to-out swing
With a 5 iron, take a normal address to the ball. Now,
with NO ONE around (i.e. in a big open field), place your feet
perpendictular to the target line (your back will be facing the
target). Place the ball in line with your left toe at a
comfortable distance, and hit some balls in this position. Do
This correctly, and you should cause an extreme hook on the
ball. Hit about 12 balls this way, then move to the next drill.

2. After doing drill 1, take a normal address to the ball (feet parallel
to the target line, use a club on the ground to check), and
move your right foot back so that the toe is even with the
heel of your left foot (for a right hander). With the ball a bit
back in your stance, hit about 12 balls. Again, you will be
imparting draw spin on the ball, but it shouldn't be as extreme
as in the first drill. This will also train your body to rotate and
post around your left leg.

3. After doing the first two drills, take a normal address to the ball,
with a club on the ground to check your alignment. Place your
golf bag (or another club) alongside the ball (farther from your
body than the ball). Place the ball about 1 to 1.5 in. from the
bag and hit about 12 shots trying not to hit the bag on the
downswing or follow through. This will help you train an inside-
contact-inside swing that will serve to put a slight draw on the
ball.

Finally, when you are done with these drills, hit some balls from a normal address position with a club along your toes for alignment, but nothing
else except a target to hit to. You should see your balls drawing, going
farther, and being more consistent. When you are done with the irons, move
to the woods, but I would advise you to not do drill 1 with the woods. The
others are ok though. It takes practice to eliminate these two faults, but if you are diligent, I think that this will help you out some...it did for me. Sorry about the length, just wanted to help.

harris_tx
handicap: 3