Secondary spinning after new belt install

So I replaced my factory belt at 1100 miles with a Gates 24C4022 and now after clutches are engaged the secondary won’t stop spinning. I then tried a Polaris belt 3211162 which is what the dealer said was the replacement for my factory belt and it does it even worse. With the Gates belt I can stop the secondary with my hand. With the new Polaris belt I can’t stop it. These belts are thicker than my factory belt but are supposedly what is supposed to go on it.

Nothing was changed except the belt. Any thoughts?