What to try next??? dragging brake shoes

I had a residue valve in an MC get plugged once and it would hold to much pressure in the wheels cylinder. Easy check is apply the brakes a few times and then crack the brake line fitting at the MC if you get a big squirt of fluid then your are holding pressure at the MC.

dgc333 thanks for the info on the MC I didn't know how to check that untill your post, I am going to work on it tommorrow, if i figure something out I will post it, thanks to all for the idea's