Downtube gripshift losing resistance
I have a DT IX FS and have always been pleased with the Sun Race shifter and derailleur - solid reliable shifts even in the worst of conditions, although a bit agricultural. I particularly liked the red ring that could be rotated on the shifter to give more or less positive clicks between gears.
However, I now have the ring set to the most positive setting and there is barely a click, resulting in me sometimes over shifting to the next gear (either up or down).
I've had the bike for about 10 months and racked up about 1300 miles, so there's been plenty of shifting on my hilly route to work.
Has anyone else experienced this and know of a fix before I take it apart?
I'm sure an upgrade will be suggested, but I'm reluctant to go this route because (for me at least) the standard set up works well. I have had hi-grade mtb's with top notch shimano componentry and so do appreciate the benefits an upgrade would present.
Am I right in thinking a shimano grip shift is not compatible with the sun race mech due to different spacing? I think I'll be lucky to find much bar shimano at my lbs and so would need to replace the mech too.