I just maidened my foam Sapac T45 today with a TP 3s 2200, pulling 350 watts and 38 amps on Don's Wicked 4800kv. I hand launched with about 15 degrees up attitude into the wind from on top a small hill with a gully below me. At fun throttle it climbed then stalled and droped 20 feet before it had enough speed to climb. Should I not have throw it with 10-15 degrees up? After the first few minutes I could see it needed the battery to be shifted forward about a half an inch or so to get the CG more nose heavy. The landing was almost uneventfull except for two bounces as it came to a stop. I was going to try again but when I turned on me Specktrum DX7 it says "Backup error". Well that ended my day. ANyone have a clue what Backup error is? I thought it was maybe an internal battery gone bad but I can't seam to find one. Any ideas?