Hi, I've have my Tour for about a year now, it has about 400 plus miles on it, and it's had an intermittent problem with the chain skipping, when I hit steep hills. (12-15% grade) The trike generally carries about 260 lbs with panniers and myself.
I've had the derailleurs adjusted recently, I clean the chain, derailleurs and idlers often (I ride in dusty and often sandy areas) and the chain still skips on the granny gear when hill climbing. It used to shift to a higher gear on me as well, but now it seems to just skip.
Was wondering as well, if this was a common problem with long chains?
Thanks for your help!