Hi Whizzy,
I had some stiction problems with mine when I first set up mine, and it was because the slide on the throttle arm was not horizontal, so when freshly oiled it was fine, but within a few minutes of running it would start to stick.
My solution was to fit a spacer between the servo arm and the slider, no problems since.
What filter are you using, I've got the MCD one with a D&D pre filter, and whilst the linkage is close, it's never caught up.
I'll post a piccy later
