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Picture 8025
Here ya go:  Nylon limit screws. 
 
Picture 8022
Now we’re at 55 grams dead, a total of 18 grams saved from stock.
 
Picture 8026
Picture 8028
Here it is installed on the Rue.  I tuned it and took it for a light spin and It works terrific.  The upshift is much quicker than the Red Fd that it replaced. 

When installing, i had to keep the steel M3 inner limit screw on there because the full force of the spring simply bent the nylon limit screw.  Don’t replace the limit screw with a nylon piece until installation is finished.
 
Picture 8033
I took the opportunity to outfit the rear mechanism with some nice M4 nylon pieces.