Re: New - Hi from South Africa..
I would suggest posting photos which show the problem. I'm no expert and could well be wrong, but if it were me and I had options in how to mount it, I'd go for as direct a line as I could between the motor sprocket and the wheel drive sprocket. Otherwise the chain is going to jump the sprocket. Unless I'm not understanding the question. That's one reason photos are good. You sound determined and willing to do what needs to be done. Once you post photos someone who has run into a similar problem can help you out. Good luck!
Someday when I grow up I will probably lose interest in toys with wheels, but until then...