I am having the same problem on my OCR 2! Non drive side clicking while climbing. I tried climbing with only my drive side in and it doesn't do it, and I tried with the non drive side clicked in and it would click. I had the bike shop try and I even tried at the bike shop and it wouldn't click. One I left and did a slight incline (Florida) it would click. 16mph @ 60rpm gets it clicking every time while going up. They even tighted the crank even though they couldn't get it clicking.