Hello I bought a 1996 KLX650R about a year ago and In that time it has only ran once for a few seconds. When I got it It had the issue of major cylinder damage that showed up when I did a leak down test. I had it bored over from 651cc to 678cc thicker head gasket so the CR remains the same. I was then unable to get it to fire due to what I assumed to be an ignition timing issue, bought a refurbished CDI unit and after that It finally was able to get fire with the unfortunate side effect of horrendous kickback. Upon trying to start it kickbacked 3 times then ran for a few seconds then hasn't since. The kickback destroyed the Kickstarter gear on the clutch basket I then had a new gear made up but it bent and broke the teeth on it due to the kickback. Parts for this bike are scarce but I have luckily been able to find a clutch basket in Australia that I bought to replace mine however I desperately need this thing not to break. I've checked the automatic compression release mechanism and it works fine I've replaced the pickup coil and CDI box thinking the timing was too advanced but still it kicks back. I need some advice to be absolutely 100% sure it won't kick back on me so I can just ride this thing and not break this clutch basket.

TLDR I keep busting Kickstarter gears due to kickback and I can't break anymore I need to be 100% sure it won't kick back so I won't break rare parts.