My race engine has about 16 hrs of run time. Checking compression ,it has good numbers . 165psi. Used a snap on gauge. My question is . Withh good compression , does performance drop with that many hours on it?
I’d have competent builder look that guy over. 16 hours is a lot on a yammie. It may not need a total rebuild but as said above if it goes boom its going to cost way more to fix. Preventative maintenance is the key to both power and longevity.