I'm having issues with this engine since break in. It has about 3/4 of a gallon of 20%. Seems to flame out and I chase the tune waaay too much. Temps never above 270 degrees. I know they are sometimes finicky but I have 7yrs in the hobby and have run my fair share of mills.

Anyway i opened her up and found this Looks like it's a defect at the braze line (for lack of better word). it's located right behind the bearing and you can see wear at that location on the crank

What do you guys think?

looks like a bad cast. Since the machine finishing didnt even touch it .. id say defect Id contack Picco.

picco strikes again!

yeah I agree. I will be contacting Picco/Ofna first thing tomorrow. hope they take care of this because it's obvious not a user error issue.

Anyone have warr experience with Picco/Ofna? How did it go? I would hate to be out a week or two while they inspect the motor Since it's so obvious I think they should send a motor ASAP and I'll send this one back

I'm bummed. This is my sons ride and now it's back to the 3.3