True, Bearingspacers do not have anything to do with a wobbly wheel. Bearingspacers only makes the bearings run freely so that the wheel (read: scoot) can make maximum speed.
About the wobbling: 9 outta 10 its because the bearings were fitted wrong and probably hammered in the wrong way.
Best thing to get it right is to mount the wheel in the scoot (fork) and then lift the scoot up by holding ONLY the wheel in you hand. The whole scoot must now have the whole weight on the wheel in your hand.
If thats so then take a metal hammer and hit with a straight hit ON the axle. Do the same on the other side of the axle and see if the wheel is still wobbling. If it still does then the bearings are still not right in the bearingslots. Repeat it again and the problem will be solved probably.
IF not then you allways can go back to your retailer and let them check if its a productionfaillure.
Keep in mind that we check each wheel 3 times before packing but, HEY, were also only humans so we also make mistakes sometimes...... We will allways replace a wheel when something like bearingslots isnt as it should be.
Each week we ship out 2500 wheels if we get back 5 to 10 pieces of them then its much, but its possible.
Good luck
Marcel