This is my first post so please be gentle with me guys and sorry if i have posted this in the wrong section. Been reading a lot of the posts on here and have to say that you lads certainly know your stuff. I am new to the NSR250 so just trying to educate myself. My first question is this, does anyone know if the MC21 pulse coils (flywheel pick ups) can be used on the MC16? Just from looking at photos it looks like the mounting holes are the same but the sensor looks longer on the MC21. I have seen a pair from a MC11 that look the same apart from the length of the wires and no neutral switch wire i think. I suppose the brackets could be slotted to set the gap. What should the gap be anyway? Is the resistance the same on all models? Any advise/help would be great. Many thanks to anyone who replys, Andy.