There you go, you just prove my point ...that's why your driving a bus and I ran and actual repairshop for 27 years.
Let me explain it.
This bike has been hitting the trails since early May....how many hours do you think it has.?...keeping in mind,to keep this engine from grenadting... piston should be replaced every 40 hrs or so....now just imagine after this so call repair the engine detonate on his way home....not knowing who this kid is or his mother is....what if she's somekind of crazy Karen and blames the repair you've just did...and decides to take you to court.....
That's the difference between and amateur and a professional ...