Jjoos, I have the same Sullivan remote ignitor on my Saito 100, using an OS type F, and it works fine. I'm wondering now if you got a bad one, do you have any other extensions you could try it with. If you cant even get the clip on it with the glow plug out, then there is definetely something wrong. Maybe go to your LHS and take your plug, and try a new extension to see if you got a bad one, or maybe even your type F plug may have been manufactured wrong, did you try another type F plug?. Daz...