The other day I was picking up some bling from my polisher and sitting on his bench was a Kawasaki 1000 transmission in pieces, all polished up and shiny as a new pin that he'd done for the bike shop next door to him for a historic superbike they're building for a customer. I might do a Maico trans myself and see what the difference is......
WARNING: THREAD DEVIATION.
Doug, as a separate issue, have you tried the coil spring conversion on a Maico clutch? I'm about to set up a magnum clutch for my 360 oval and want to try the Wheelsmith coil conversion I've had for yonks.