I would call Axiom and see what they can do to help. The original designed amp is no more, parts are pretty much a no go. I had to get a new amp for mine about 3-4 years ago and it was a totally newer amp. I would see what they can work out..

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85