Cs-124 vending motor

[joesquid]

I'm working on a CS-124 and discovered one of the three vending motors is frozen solid.  The motor is located in the middle bottle stack.  I removed the motor/gear assembly from the stack and detached the motor from the gear assembly.  The motor turns fine and internal resistance is about 21 ohms (as it should be for these motors).  The sealed gear assembly, on the other hand, is frozen solid and I can't get it to free itself.  I tried filling the gear assembly with penetration lubricant and letting it set for a couple of days, then tap around the gear case with a hammer to loosen the rust that was jamming the gears.  It's a trick I used successfully to free a frozen gear assembly in a Vendo 144 vend motor (very similar design to the ones used in the CS-124 unfortunately not interchangeable) Not having any luck this time around.  Does anyone have another suggestion or have a replacement they'd be willing to sell?
Thanks
Eric