1200 MX-2 Re-built after Crash and Burn !!.

ST 1200 MX-2, re-built after crash and burn last August. Running a 36-42 x 1100 KV Turnigy brushless, 12 x 6 Master Airscrew 3 blade prop with 60 amp Turninigy speedy and 2200mAh 4S battery. Awesome power, but I think it is over propped, on average only getting about 3-4 mins on a battery. Will put on a 13 x 4 prop next time to see what it does, originally ran this with a 3S set up !!