A couple years ago a gear motor went out on our P945 and it was going to cost almost as much to repair as a new machine.
Now a gear motor went out on the replacement 9550 sport with same story of repair vs replace cost.
I chose option 3. Took apart the 2 machines and the remaining good motor in the P945 was a direct replacement for the bad gear motor in the 9550 and plugged right into the circuit board inside the motor block. Cleaned up the big O ring/O ring housing that seals the motor block as there seemed to be a build up of minerals from the pool water that possibly caused a leak. Gooped the heck out of the O ring/O ring channel with silicone goop (NOT GLUE). Put everything back together and it’s been working perfectly since.
Cost $9 for silicone gloop from Leslies.
If I can source more motors I can likely get the old P945 back in service.
If not, look around for as-is broken Polaris machine. If the wheels on at least one side of it can be turned manualy then it likely still has a good gear motor. Swap that sucker in and save yourselves a bundle.