Hello I've got a trek 7200 23 speed with grip shift. 3 - 8
I typically stay on gear 1 sprockets 1-5 and seem to have issues when shifting in 4 or 5, if that makes sense lol. It seems when I go into these gears (usually for straightaways) there is a lot of "noise" and it almost seems go through a few different gears before finally making it up it's mind. It's very distracting and makes me not want to shift into it.
It will also sometimes shift automatically when I'm 4 or 5 which is also very disturbing. It seem gears 1-3 are perfectly fine, and I use them for going uphill.
I've described it the best I can, which isn't very well unfortunately. Any idea whats going on and what I can do to fix it?