The reason I modify them is as you say to get rid of the lumps on the cam because they cause so many problems with sticking. Because I have removed the lumps I have to put washers under the cam to compensate for the reduced height of the cam. This in turn creates a problem refitting the cable so I cut a slot in the carb body so I don't end up bending the cable. I put a bolt in where the kill switch goes to prevent the cam turning too far and allowing the cable to pop out of the cam. The kill switch setup is a complete abomination and that is why I remove it and put it up inside the snorkel. It is a pain but the only way I can get them to work reliably
Well done in getting it going
