Hello all, I hope you can help me out with a knocking sound I can't seem to narrow down. The noise appears to be coming from the front side of the bicycle. It only occurs while I am pedaling and leaning on the handlebars. If I sit more upright and put no pressure on the handlebars while pedaling, the sound goes away. I've checked everything I can think of with my limited knowledge to see if anything is loose but can only recreate the sound while riding.