Shimano Ultegra STI Shifter downshifts only when returning to start position
I am having an unusual problem with my STI shifter where it downshifts after a 'click' (doesn't actually click but I can't push the lever anymore) when returning to the start position when I use the downshift lever on my front shifter. This only occurs when going from the top most gear to the next gear position. Also, this is occurring when the shifters are off the bike and aren't attached to any cables. Thanks for all the help.