Thanks guys I'll definitely check it out tomorrow. Unfortunately this is at my work so I have to wait.
Sad thing is that I've only run 3 time with only one successful cut of some king core with a really really shallow plunge when I had the 24V DC spindle mounted. Tried some polycarbonate right after and haven't had a successful job since.
First run there was an issue with loose V-wheels on the z axis that forced the spindle to cut all out of wack. After fixing that and double checking all the others I haven't had any luck with either spindles.
I can say, though, that the Y axis has never moved smooth at all by hand.