Are the inside, motor side clutch faces aligned? You can slip a feeler gauge between belt and primary clutch sheeves. Inner and outer at primary should be equal. It’s a bitch to get feelers in there but once bent correctly its easy to check.
IF that are not the same you have two options, KWI float mod which lets the secondary float and align itself. Or the right way to machine the inside of your secondary to bring it closer to trans the amount it’s missing aligned. Might take a couple times to get it perfect. Or you can over machine it and shim to perfection.