I been messin with this thing all morning and haven't figured it out. I thought dropping the needle helped, but apparently not much if at all. I switched out the plug and put fresh gas in just in case. It totally feels like it's misfiring, not really like a blubbery rich or hesitating lean condition. Think if the head gasket was leaking to the inside and the plug could be getting wet it might be missing a lot under load? I pulled it out and it was pretty dry, chocolately, and didn't smell of antifreeze.
I gotta give up for now, I got stuff to do for the wife tonight. Might not be riding tomorrow after all....