it happens to me - had to shift by hand for 140 miles - once on the highway I was good

 

Read a thread on here last year about tightening the shifters. People saying you have to really put a lot of torque on the hex bolt.
Because of using your foot (toe/heel), we generate alot of force and the splines are fine as opposed to coarse.
If they are not properly tightened the result is stripping the teeth off the spline.

Just throwing this out there for what its worth.
Your mileage can and will vary.

Stay safe.

 

Some guys remove the tightening bolt, drill the threads out and replace it with a nut/bolt. The tightening gap can be increased with a hacksaw.

 

Your $80 piece was the greasable version, dealer tried up selling you. Ask for the stock shifter shaft.

 

What tools are needed?

 

medium size screw driver - hex wrench

 

I grabbed one today at my local dealer for $15
Took 5 minutes to change' the old one was shot.
I suspect it was loose and I stripped it in New Hampshire a few weeks ago.
anyway, I knew there had to be a $20 alternative from the $89 option my Indy quoted me yesterday.
glad to have my heel shifter back.
Lump