The one thing I don't recommend is disassembling the frame. Doing so will void the warranty. They are made to close tolerances and fixtured when they are riveted. We can't guarantee that paint build-up (even 2-3 mil) won't affect fit-up when reassembled.
But that is good to know anyway. I had considered de-rivitting the case myself for painting, but the shear number of rivits per panel turned me off of it . . . wasn't 100% sure I could get it fully aligned again.