The table is out of alignment...I just got an Excalibur EX-21, and had the same situation shown in your picture (in fact, when I received my saw, the table bolts/nuts were loose)...My blade clamps were in perfect alignment, but as you can see from the picture that you posted, the blade is offset from the center of the hole in the table (my first test with a blade hitting the plastic shroud made the saw sound like a bicycle with a playing card in the spokes)...Loosen all four nuts/bolts that hold the table to the trunnions...The table mounting holes on the trunnions are slotted, which allows the table to be adjusted...With a blade inserted and tensioned, position the table so that there is equal distance on both sides of the blade...Now, re-tighten the nuts/bolts that hold the table to the trunnions...Sometimes it's simply a matter of how you look at it...In this case, the blade IS NOT in the wrong position with reference to the table...Instead, the table is in the wrong position in reference to the blade.
As a side note, I removed the plastic shroud and the dust chute...I don't use dust collection, and removing these items allows the sawdust to simply fall below the table...With the dust chute out of the way, you have more room to maneuver under the the table while changing blades (for my hands at least).