One of the gear shifters (the right hand side one) on my 2011 Brompton has broke, this is an extremely big deal, especially since I live in Huddersfield where there are Hills EVERYWHERE. I would like to replace the broken shifter (perhaps both), but I'd rather go for something metal, stronger, more durable .. any suggestions?
Also, why is it that the left gear shifter makes no difference at all on my Brompton? I should be feeling a change in power-need should I not?
Any help and advice would be greatly appreciated.