not to beat a dead horse, but i have chain noise that i can not find. i have a stock iro mark v pro ,it had a little noise when i got it that went away. now i have about 400 miles on it and it sounds like popcorn,i can stop the noise but not cranking hard, i have check the chain ring bolts,the cranks and even the seat to see if it was loose,ive cleaned and relubed, i used a wax lube that made it worse so went back to the cross country stuff. do you think it could be my bottom bracket or my chain im going nuts nuts im telling you