660 purple epi spring need thinner belt?

I just purchased and installed a secondary clutch purple epi spring and when I went to put the cvt back together the belt wouldn’t fit into the secondary like it should it sat higher and would not clear the cover if I tried to put it on. Do I need some special belt now too or did I do something wrong. It seems like because the new spring is more rigid than stock it’s pushing the secondary together too tight. Trying to put it together this week so I need advice asap. Thanks