Hey there, so whenever I change my rear gear to a bigger cog it changes alright, but when I stand up and pedal or start going up a hill (when I need a lower gear) it drops back to the bottom cog; usually causing crotchular pain from landing on my seat trying to regain balance, then me walking up the hill. I can barely put any pressure without it dropping so Im stuck with using 2 gears (my two front chainrings...which only gets higher)
I checked my cassette teeth and they look fine and not much wear. Is this a problem with my rear derailleur or cable/chain tension?
I will be taking it into my LBS but thought I could save $50 from them telling me what one of you may be able to solve and buying whatever needs replacing on top of that.
Thanks in advance!