For those of you that have struggled assembling the throttle twist grip assembly you will know that inserting the little nylon guide can be quite a PITA.
I tried Yens suggestion of removing it all together but didn't like the 'hacksawing' feeling of the cable grinding on the alloy housing, through the grip.
Plan B - cut the lower part from the nylon guide, about 8 -10 mm is sufficient.
Refitting the guide is much easier as it easily slides past the 'pull' cable and doesn't need to be worked past the 'push' cable.
The twist grip assemble can now be tightened fully without giving the usual sticky throttle and a nice smooth throttle action is maintained as the pull cable is riding on the remaining nylon guide.
I have done about 9k with it like this and all is fine.
Phil