I couldn't bring myself to read all 60 pages of this thread so sorry if this has been asked before.
I have a UCD 60 with a Saito 125 (inverted), stock tank mounted forward, GP fuel valve...

I get flooding of the Carb during refueling, was wondering what may be the cause. It seems to not be as bad after the engine is warm...

Also, when vertical, I lose fuel and the engine dies or comes very close. What can I do to fix this very annoying problem? I assume that the tank is losing pressure but am not sure why or what else it may be.

Where did you all buy your Irvine hardware? What other RC sites should I check out other than Tower and Horizon?

Thanks