I searched before posting and it seems this hasn't been mentioned yet. I found the existing shift linkage to be a little longer than I liked. I would have to extend my foot a lot upward for up-shifts and hence my up-shifts clunky and not consistently smooth.
I took the existing shift linkage bolt off and cut about 4mm off the end of it and screwed the ends and lock nuts down. Shortening it a touch gave me a little more adjustment as the stock one bottomed out. The shift lever is in a better position for me and up-shifts are much easier.
The picture of the result is below. You'll notice my shift bolt has been shortened from the stock one.
Hope this helps someone...this made shifting much less clunky for me.