What was the part number of your Firepower? if you bought a smaller than stock, what did you use to shim its to size?Had a Ballistic on my M1100T. Worked great as long as I unhooked it when in the garage, as the sled drained it sitting.
Got a Firepower on my Alpha, will leave it hooked up to see if it drains as well. So far so good, but sled has not been in the snow yet.