I am using a square pack shoved onto the tray next to the throttle servo. I couldn't squeeeze it into the back behind the bulkhead. I have a HUGE chunk of lead on the tail - maybe 2oz or more - and the CG is well behind 5" from the LE .

I have the $18 replacement carbon fiber gear from Moose , taking even more weight off the nose. My engine is an old el-cheapo Chinese ball bearing ASP .46 , servos are standard and I used all the ARF pull-pull hardware.

This plane flies great. It will take off in about a plane length, land at your feet and do the all the spin & 3D manuevers unbelievably.

-Cheech-