I think i know the prob. When i did the paper clunk i had difficulties to put it in the tank so i enlarged the hole too munch. When i was filling the tanks i saw that the upper was leaking a little bit by the plug. So i think that the upper was sucking air then it was acting like a vent...upper with a vent = fuel was lowering and the upper didnt stay full..Will buy a new 4 oz tank and will dremel a little bit the paper clunk...

I didnt take pics 'cause i'm still on primer..

Wren MW54, Y/A retracts, HS225BB on Elevons and rudders, JR 811 digital on speed brakes and wheels, JR 517 on retracs and brakes valves, one 6V packs for all the above and a 3.6V for the pump.

I should use mini servos for valves but i had some old 517 un-used.. that cause me a little room prob but it's ok.

Had some glitch on the speed brake servos only, it's the one closest to the ECU and Pump, at the time we did the range test i found that my batt. pack was low (5.8V) maybe taht was the reason but we didnt take any chance i charged the pack and disconnected the servos for the fist fly i will check that this week.