I have a trusty Bowflex M5 that has slippage on the left crankshaft axle. The axle is almost totally stripped and the left pedal crankshaft no longer grips properly. If you are handy with metalwork it might be fixable but is likely just a machine for parts at this point as I've replaced virtually every other part on this machine in keeping it running for 10 years.
Free to any takers if willing to pick it up, just a heads up it is likely more parts machine at this point (Goodbye old friend!)