Broken parts

I just noticed I have a broken part on the shifter for my rear derailleur. I've had some sporadic involuntary shifting the last few rides and since I'm going to castlewood today I look for the cause. I use SRAM X-9 shifters and the one for the rear derailleur where you can adjust the line is broken where it screws in or out. I must have had an impact on that side because the hose for my rear brake has a kink in it near where it attaches to the reservoir. I was able to screw it in enough where it would stay in place but I'll have to replace it. Maybe I can switch to the 1X9 setup I've been thinking about and use the part from the other side.