My bike is ticking and it is driving me mad trying to figure out what it is. Any of you have any suggestions? Happens when I'm pedalling (not when I'm coasting), one tick per pedal stroke as the pedal reaches ~4 or 5 oclock. Sometimes it'll miss a tick or two. And it happens in all the gears, but not if I move the pedals very carefully or when I'm not on the bike. Took the bike to the shop today, but it wouldn't tick for the shop guy so he couldn't figure out what the problem might be. It is just such a frustrating noice and seems to be getting louder, or maybe that's just because I am paying more attention. Kind of like a watch ticking when you are trying to sleep. Any suggestions as to where to start looking for a problem/solution? I have just replaced the chain, rear cassette, rear mech and one of the front cogs due to wear and the noice still didn't go away.