i had those problems also. best thing that works for me is just cleaning the shafts with water. sometimes i use a little dishwashing soap and rinse with warm water. when i put the clamp down i slide it back and forth a couple time (it'll probably only slide 1/16") to make sure the glue gets all over the base of the vane. i then hold it down for about 10-15 seconds. i'm using some kind of instant adhesive. since i switched to cleaning the shafts with water only i've had no problems at all.