Some one said that I was a one post wonder, no probem there my list of grumbles is unending. Here's one for a stater. I remember a wonderful world of steel cranks and cotter pins. Now we have the rubbish system of universal alloy cranks 'squeezed' on to steel shafts. What happens is that after a number of years ( assuming like me you don't discard your bike every year ) if you are a REAL cyclist out in all weathers the alloy corrodes on to the steel shaft ( alternately the bike ia secondhand and the nerd who has owned it previously as overtightened the clampling nut. ) When you come to extract the crank for maintenance and inspection the forces invoved are too great and the alloy thread for the extracting tool strips off - Great! If only there were three suitably placed flanges on the crank end then a three legged puller could be used. But of course that's too much to ask for.