Mamiya M645 parts question

So, I'm looking into a few M645 options while I try to swap out my RB67 kit for something smaller (shameless self promotion: look for my listing in the classifieds), and a couple of them I find with broken winding levers. This means the asking price is nicely lower, but are those hard to find on their own (well, you can just buy a junk body for parts), are they hard to replace, and how interchangeable are they between different M645 models?

Mainly that last question, I think.

Thanks in advance!

The plain M645 and 1000s versions have interchangeable levers, not sure about the later Mamiyas. In a pinch, there are 3D-printed models for a winding knob that works. But the folding lever is better.

Is it the lever, or the connector that the lever attaches to?
If it is the connector, it would be more of a problem.
Perhaps @Mamiya_Repair might be able to help.

Having had, and liked, m645's, I found them to be reliable with relatively available parts... with the winding levers obtainable and easily replaceable!