The Unfixable Squealing Serpentine Belt

Just curious, do you think a belt tesioner can be too tight? When I changed the belt three months ago, I could hardly move the tensioner. It took almost all I had to get it loose enough to slip the new belt on. Of course, my hands were wet from antifreeze since I had to take a radiator hose lose to get to it…maybe that was my problem! ANyway, thanks for the input.

Jim S.