looking for some clutch help

what kind of sled? year make model

yes it matters. If your squealing it cause the belt is proabably to small.

Did you try moving the cam on the secondary. Turn it so the belt rides down in the secondary a little more to see if that helps. The cam is on the side of the clutch with #s 1-5 if you didn't know already.

I checked on this site http://www.mfgsupply.com/DaycoPolUltraDriveBelts.html and there is a huge difference between the two belts. It shows the 3211065 is 2 11/64" longer. Width is the same so the shimming of the clutches will be correct. You are right in using the 3211065 belt because your clutch center to center distance is 12.5".

According to the pictures you may be a bit out of alignment. Did you push the belt over to one side before the picture? It looks like the belt is up against one side. You can adjust by moving alignment washers/spacers on the secondary. Whatever ones you take from behind the secondary you put on the front under the bolt or vice versa. The clutch offset should be 5/8". The other thing to check is the belt deflection. It should be 1.25" when you push down on the midpoint between the two clutches. Rotate the cam on the secondary clockwise towards #5 to give more deflection. If that doesn't work you may have to install another spacer in between the secondary sheaves.

Looks like you have some pretty excessive side clearance on your primary. I think .020" is the max you want. This will help with low end bog too. I just adjusted mine the other day. Not hard but you have to have the special tools for it I would agree on loosening up the secondary too. Move it up to #4 and see how the deflection and squeal are.