I'm having problems with my Wellgo road pedals. Easy to clip, never unclip by accident, but very hard to unclip. Sometimes I have to apply such force as to change the cleat position, and nearly fall a couple of times in almost every ride. The setting is at the less tension point. I've considered filing the retention piece, which has a sharp angle, to a rounded shape, and/or use some wax as lube. Thanks for your opinions!