topflightpro

Agree, just replace the spider.

I picked up a Cannondale SRM spider used not too long ago for $550 - including new 11-speed chainrings. My wife has the Specialized Quarq on her bike - Specialized Bicycle Components. Teton may be able to get you a deal on an SRM.

That said, the cost of the Power2Max at $740 seems like a solid deal.