Shim mod

Hello, I just did a shim mod on my 2015 grizzly 700. Everything seemed to go ok but when I put the metal clutch shroud back on it was rubbing against my clutch. I put 1.5 mm worth of shims in. I used a ratchet strap to hold the clutch while I took the nut off, is it possible I over tightened and bent the shaft? Or something else? Does have a slight wobble. Should I get shroud machined or just let it wear itself a groove?