So I have a Viking vi with 28” mega mayhems. I new there would be some power loss but I defiantly notice it. I use low when needed to save on the clutch. My question is, is it worth the jbs exteme sheave or can I get away with a shim? I would love to save my $400 + if I could. But I’m not opposed to getting the sheave. Just testing the waters. I know people who say the shim will give me my bottom end back but lose top end. Thanks again.