The new speedplay pedals arrived in May 2012, and within a few rides the knee issues were no more.
So the new problem, I’ve done a fair bit of walking on them in the 11 months and 4500 miles, the cleats which have been cleaned every ride and pedals greased every 2/3 weeks in the winter. The PROBLEM is the fixing screws being worn down so you can hardly see the head.
word of warning, get some replacement screws before its too late.
YOU don’t want to grind down the heads and mess your perfectly good cleats up and at £35 a pop screws at £3.99 are the best option WIGGLE is your friend on these they have 4 lengths to choose from NICE