Help! Groupset Repair/Replace Dilemma (105 9-speed)
First post on the forums and I'm already looking for a little advice from the community. Pretty please.
On Boxing Day I took out my Cannondale R700 Stars n bars for a stab at the Leith Hill Octopus. Before we'd even started, I lost all rear shifting. The right shifters seemed to be stuck together.
Anyway, LBS seems to think that the right shifter has gone and don't think spare parts are available anymore.
It is the right Shimano 105 ST-5500 9-speed shifter.
So... what to do?
1) Treat myself to whole new Groupset (maybe even 10 speed!)?
2) Some kind of hack with Sora or another 9-speed option?
3) Source used or NOS 105 right shifter?
4) Some other clever idea from the community?
Any help or advice much appreciated.