I rebuilt mine and they work great except the arm that the spring attaches to pops at one point of opening the door. What I have determined is the Rivet that holds that arm on has worn down and has way too much play and jumps causing the popping feel and sound. I haven't found anywhere to get a replacement rivet but found a place that sells shoulder bolts and need to get mine apart to find out exact dimensions to match it. I bet that will work much better
PS I attempted to use a chisel and crush that rivet to tighten it up but not go...too hard of steel and thing is probably too worn anyway. When I find out how to get a replacement I'll let everyone know.
