CRANK WOBBLE!! Updated, found problem
I would buy a dial indicator (if you dont have one) and remove everything down to the crank snout... then turn the crank by hand and track if the snout is bent - this would show something wrong with the crank... if it shows true then it's obviously somewhere else... put the balancer back on and repeat the process... then add the spacer... then the pulley... checking each piece as you go --- itll narrow down where the problem is.