I had the same problem. I turned the throttle completely upside down, re-routed the cabel so there is no snag and it works ok. Also, I have about 1/2 inch below the top yoke before the clamp, otherwise nothing fitted, its too high. It will still foul tho hence the 180deg throttle change
do a search on here for bar risers - cant remember whoi it was but they posted some pics which I found really useful when I got stumped. If I get in the garage today I'll try and take a couple myself and post em here.
Good luck!