ORIGINAL: 1QwkSport2.5r

I ordered my Enya #3 glow plugs on Wednesday and they showed up today. Now the only problem I'm encountering is that my remote glow driver will not clip onto the glow plug and lock onto it. I believe its a Sullivan Head Lock Remote glow plug connector, very similar to this:

This clip works fine on all of my other engines, except the 60-4C. If I use 2 washers under the glow plug, it will clip on but I worry being that the Enya glow plugs have a shorter reach that this may hinder the glow plug operation somewhat. I had been using 2 washers under the OS F and Fox Miracle plugs, but that didnt bother me as those plugs have the protruding tip on them. The Enya plugs do not have this (except the 4C plug). Should I worry about using the extra washer? The engine did not come with the Enya glow plug clip/remote driver harness, unfortunately.