71 Challenger: Power Windows (slow 1/4 windows)

Anyone had this problem? I've been battling it in my car for a long time and I know it isn't a good thing for the motors.

I usually help them up by hand. I am wondering if this is a grease issue? or a motor symptom. Sometimes my passenger side doesn't work unless I push on the passenger button which makes me think one of those roll connections are loose.....

Just trying to get any tips if anyone has dealt with it before.

make sure they are lubed and adjusted properly.
next they should be wired with relays so the motors see direct battery power instead of power thru the harness. this should make a significant improvement in how they work.

Have you seen a diagram on how to wire in relays? or is it pretty straight forward?