R7000/R8000 left shifter troubles and fixes

[chicagorider]

Hi all,

Just wanted to see if others have experienced a similar problem with R7000 and R8000 left shifters that, over time, have trouble shifting the front chainring. I've traced the problem to a worn plastic bit inside where a metal hook is supposed to catch to shift the chainrings.

My solution to date has been to cut up a bit of credit card and superglue it - which works fine but I don't think it's a good permanent solution. (see picture - the purple is the bit of credit card that I superglued). I wanted to hear how others have resolved the issue!

https://www.dropbox.com/s/p7porsm32k...NIGHT.jpg?dl=0

Thanks!