The response from Patrick Keating seems to be a typo, not instead of now, as he started with "Unfortunately". But, as a Journeyman Industrial Master Mechanic, I would bet that your problem would be with the bearings, barring an impact incident directly to the shaft, is more likely to be the cause of your "wobble". As I said, the bearings may be the issue. To check the condition of the bearings, (UNPLUG THE POWER FIRST!!) take the blade off and try to wiggle the shaft to see if the clearance is tight or loose.
Unfortunately we do now work on those types of saws
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