Well they are hearing about it now! Seems like more than a few people are seeing it and I haven't even posted it on FFcars yet. My second replacement caliper is doing the same thing and it's not the spring catching so I tried to lube it by taking the spring off (do not do this as it took me a while to get it back on) and greasing the shaft to see if the action would be smoother. It wasn't. I just ended up disconnecting that caliper. FFR agrees we should not have to put an extra spring on this to make it work. It appears that the shaft of the lever is just hanging up inside the housing. The right side is super responsive and the left should release as well. I think it's a bad chinese casting that's the problem.