Hi Mate,
Your pro should be able to get them from TM, about £10.00 each. They come as standard with the
R7 tour prefered version.
14 gram, put two in the rear pots and 2 grams in the outer pots.
Should look good and hopefully go well.
If you cut only 1 inch off it may not make any difference to the lift (or at least I don't think it will).
Ian.