For all those interested, please find included an update. Eric, please clarify as you see fit.
We shipped the entire motor to Eric. Upon inspection from Eric, it appeared that the big end rod bearing had failed due to improper assembly of the cases. As I understand it, the crank halves were improperly stressed during installation which through things out of kilter leading to premature bearing failure. Additionally, the cylinder bore was found to be damaged requiring an overbore and re-plating. We look forward to receiving the motor next week.
Worthy of noting, I can't say enough good things about the way Eric handles his business. I lost count of how many times I called Eric asking about progress on this project. Each time we spoke, he answered all my questions thoroughly, patiently and with a smile; and this isn't even my motor. Each time you hang up the phone with Eric, you're left with a great feeling of knowing that he cares about you and your project. His level of technical competence is simply incredible.
While riding at the track last weekend, a friend asked me how this project was going. I informed him of progress to date and he asked, "Why did you send the motor so far away? Who is Eric Gorr." I tried to explain, then just asked for his email adress so that I could forward on Eric's website address.
It's going to be fun watching my friend roost with this motor now. I feel confident that it'll be the best 99 YZ250 on the track.
Thanks Eric.