update: went down to look at the top end today and it does look like it could use a rebuild. values on cylinder 1 and extremely black with carbon deposits. he has the entire machine torn to pieces
Deposit's on the valves is normal as it is when you have combustion, you will see deposit's on the tops of the pistons & exhaust port.......all pretty normal. By chance did he show you excessive blow by underneath the piston rings......I will guess no.
My point here a visual inspection to the untrained eye is not a good determination if it is in need of a rebuild. Go back to your discrepancy of the leak down vs compression test....there needs to be an explanation.
Your back yard guy should have consulted you prior to tear down plan and simple. Myself I would not trust them to re assemble the unit, most likely you will have more issue's than you already have. Nor would I accept the unit back after the unauthorized tear down.
What a mess from were it started to this point.
He did show me "what looked like" the blow by. Like you said, I do have an untrained eye but I was somewhat educated before I went down to look at it.
My fingers are crossed that the engine was put back together correctly.... I'm hoping that when I send it to NFLOW they will be able to fix it up really nice.
When i get the engine back i will have someone else reinstall. I Will be running double filters also and make sure I take extremely good care of the machine.
I also thought about selling the machine for $3,000 and letting someone else mess with it. At this price someone could get a machine with a rebuilt engine for around $6,000 if they can do the work themselves.
I had it with that dealer. The owner " told me to come down and get my machine off his property" because "I went behind his back and called Nflow"...
Im not the kinda guy that wouldnt pay... I did although expect them to throw the engine on a skid and send it to Nflow for me. I guess after spending 900 dollars and 2 months with nothing fixed that was too much to ask.