So recently my downbar shifters on my Trek 1400 broke off (the shifters were originally attached by a metal rod that went through the frame) and they are un-repairable. I tried using epoxy to glue them back on, but there was too much force for that to work. I like my downbar shifters and I was wondering where I should look to buy either new ones or something that would let me reattach my old ones.

Thanks for any suggestions!