I have a question. Hope this is in correct forum.

I am running a tower 61 engine in my new tower uproar 60 fun fly plane. THe engine was already broken in using my trainer, so I know that it runs great. I have been having problems since I transferred it over to the uproar.

When I fly the uproar around upright and very tamely, it runs fine. As soon as I start doing loops, inverted, spins, etc, etc---- it will die. It seems to die after about 5 minutes into the run. THe engine is definately not too lean. It seems that this is a fuel problem since it happens mainly when I am inverted or looping.

I have already taken the fuel tank apart several times. THere are no leaks and the clunk travels freely around the inside of the tank without getting hung up. It is a dubro tank. I am not sure what else to try at this point. ANy suggestions out there. If not, what other info can i provide you guys to help me out?
THanks,