The secondary on my Vector was warped from the factory, only I didn't discover this until the 2nd year of ownership and by that time I was out of warranty. The fixed shieve was warped. So I bought an Apex secondary on Ebay from an outfit here in Michigan which sets up drag sleds. They change out the stock secondary for a Team unit. The secondary I received was new, but it was even more warped than the one on my Vector. I sent it back and received another new secondary, this one was better than my stock secondary but still has some run-out. I was wondering if anyone has run their sled with the side panel off and the clutch guard off and checked the run-out of their secondary. Seems like it may be something to think about. At any rate my sled seems to be good on belts and there's no vibration so I'm not worried but would like to replace again with a good clutch with no wobble. I bought the new secondary for only $90 so not worried about finding another one, just want a good one for piece of mind. Anyone know of someone who has a take-off one for sale that can be verified as having no wobble?