Well hows the testing been going?? Is it doing what you thought it would? I see you have a new rear motor mount the downward pull on the motor still causing problems or just an easier way to tension the other chain?
I have checked the covers on my 48 cc motor and my 80 and they are about as dead on as they get so you might be good on your setup for multiple motors.
Cant wait to here more about how its going and how its holding up.
Keep up the great work.
Terry