Hi all, I've noticed a knocking / clunk sound when pushing hard down on the crank even more so going uphill. From what I've researched on the net its most likely the freewheel that's causing this noise. My bike is only approx 4 weeks old but I'm already putting quite a bit of mileage on it. The freewheel on the bike is a Shimano. So from what I've read I came across the white industries EMO freewheel and they seem to get good reviews. Anyone reading this have or have uses one. Are they worth the +- £80.