Does my rear Record 9-speed shifter need overhauling?
Bought a pair of carbon Record 9-speed shifters used this past summer for a great deal. I assume they're the circa 2000-2001 model. I just recently put them on a bike, and while they're mostly terrific, I don't seem to have the right number of "clicks" for all nine gears. Specifically, there's no click when I press the paddle to get into the lowest gear, and I have to maintain pressure on the paddle for the shift to happen. Then sometimes on a hill I get a phantom upshift to the second cog.
Additionally, when I hit the thumb lever to upshift it goes directly from the first cog to the third cog--only by pressing ever so slightly without effecting a click can I manage to shift only to the second cog.
Having just typed that out, I'm convinced I do need to overhaul the innards. Right? Questions are: Which innards, exactly? Where can I get them? And also, where can I get the tweezer-like pliers used in this video of a rebuild which I intend to follow?
Many thanks for any advice on this.