02 Yamaha grizzly 660.

Hey guys, I’m having issues with the transmission on the grizzly. To start with, the engine had a rod knock so I went ahead and tore it all down and did a bottom end rebuild. I should mention that I replaced the one way bearing and the wet clutch also.
Now when I start it, it’ll make this loud clunking sound on the right side of the engine. When I put it into high as well as reverse, it made a knarly grinding noise. The clunking happens pretty often and it’ll do it in neutral too. I thought it was something having to do with the primary sheave so I took it apart, cleaned it up and put it back together.
I went to start it again and it still makes that same clunking noise. I’m gonna tear into the wet clutch to see if maybe I put the one way backwards or if anything else is wrong.
If u guys have had something like that or got any ideas let me know.