Thanks AVB,
2 strokes are not the primary engine here, we just talk about them a lot so it gives a lop sided impression. Still lots of 2 strokes here though. I changed the module thinking this may be giving me a timing issue but I will change the coil later today and see what reaction that does to it. These 2 strokes we are talking about at the moment were discontinued in the mid eighties and there is still plenty still in use today.