distributor moving around help please

Heres what I would do. Remove the dizzy, clamp the body in a vice.remove the cap, spin the rotor, watch the driveshaft. Put a dial indicator on it if you have to. A bent shaft should be obvious. If dizzy shaft is ok, replace oilpump drive. This is not rocket science.
There is a 1 in a bazillion chance that the oil pump could be the source.
My money is on the dizzy.
There is one wild card; If the dizzy is not fully seated in the block, but is sitting on a slight angle. This will force the dizzyshaft to one side of the I-shaft. As the I-shaft spins it carries the D-shaft around in an off-center circle, which presents as a wobble of the entire dizzy. This can also happen if the I-shaft is up too high,(probably due to the bushing not being installed correctly) preventing the dizzy from seating properly.