Thought I would check in with the experts before I start tinkering. Right one works fine. Left one goes up, then sought of starts slipping back down a little. I also notice it seems to hit the metal wireform above it but barely, so I don't think it's that even though it might seem. Anyone have any insight to this particular problem or should I just start tinkering. Almost all the parts are new, the top carriage, brackets, sleeves, coils etc..... TIA