I tried the hacksaw on my first steel shaft, then said 'screw it', and used the pipe cutter. The only thing you have to be wary of is the shaft bending (into an oval) as you cut through the shaft. One way around this is to stick a piece of dowelling down the butt, or another piece of shaft.

As for the syringe, yes, you stick it in all over, spurting grip solvent in.

Too much work, IMO. Lay out the cash, buy a compressor.