The rocking problem is an interesting one, some rider get it early and often, some not at all. I would suggest that it may be individual degrees of twisting IN the pedal stroke. Using the stainless wear protector plates seems to help (i.e. the wear is in the cleat backing/ baseplate -I don't like the term adaptor), and reducing the free float might help, also keeping them clean and lubed seems to help. No pedal system is perfect but these really work for me as a rider (now an ex-rider to be fair!) and as a fitter they enable me to fix most rider's problems. The Keywin road system is very good indeed, I rode them with a track lock for a few track seasons, and used the mtb pedal for about 10 years (insert customary Scherrit moan about engineering vs marketing led companies here). The speedplay advantage is being somewhat eroded by the fore-aft moveable nuts in some shoes now so I have to put fewer clients onto Zeros mid-fit, but double sided-ness counts for an awful lot, too.
The rocking problem is an interesting one, some rider get it early and often, some not at all. I would suggest that it may be individual degrees of twisting IN the pedal stroke. Using the stainless wear protector plates seems to help (i.e. the wear is in the cleat backing/ baseplate -I don't like the term adaptor), and reducing the free float might help, also keeping them clean and lubed seems to help. No pedal system is perfect but these really work for me as a rider (now an ex-rider to be fair!) and as a fitter they enable me to fix most rider's problems. The Keywin road system is very good indeed, I rode them with a track lock for a few track seasons, and used the mtb pedal for about 10 years (insert customary Scherrit moan about engineering vs marketing led companies here). The speedplay advantage is being somewhat eroded by the fore-aft moveable nuts in some shoes now so I have to put fewer clients onto Zeros mid-fit, but double sided-ness counts for an awful lot, too.