Upgrade? Chinese CNC Machine

[Carlb1058]

I replaced the yoo board with 542H's, actually to save time the only bits used from the original controller box is the E-stop, spindle speed knob and the on n off switch - the machine itself however apart from getting three Oldham couplings, ta v much to whoever it was that suggested them - sorry I can't remember who though *eep* is pretty much as it was out of the box oh and I modded the job clamps.

It's damn near paid for itself already so I'm well pleased with it. I Was gunna go buy three new nema 23's but they have from memory bolt holes that are 41mm <--> the bolt holes on this machine are 50mm <--> so the only way to have spares is to get the nema 34's which in the ad says have the same 50mm bolt holes? but are more expensive!!

Back to confusion again