Well there is a few things there that could use improvement....

1.) the O-rings needed are 90 durometer.

2.) The process described is somewhat overkill for what is really needed, however O-ring replacement is actually quite simple and very hard to screw up if done correctly. Basically , instead of unscrewing / un-soldering the starter housing, one can simply remove the three intake screws and remove the intake completely. Of course one should be aware and cautious of the EGT sensor (temperature probe). Infact removal is best to ensure no damage (twisting or bending).
Any questions can be directed to me personally at Jet Cat mon-fri 10-6 PST. 818.781.2300


Jason Burg - Jet Cat USA Factory Technician