I have a K2 I'm working on currently and when I took the bearings out of the wheels the front wheel spacer between the bearings was missing. The rear was in there, but when I went to put it back together I drove both bearings in as far as they would go and the spacer is still loose. What I'm wondering is the front and rear spacer different lengths. I'm wondering maybe if they moved the front one to the rear. I've looked online but can't seem to find anything that would tell me length. They are different part numbers on partzilla. Any help with this would be much appreciated.