OK, Thank you very much. Maybe I'll try that. Did you actually take the time and trouble to make that photo just for this posting, or did you somehow have it stored from before? Anyway, thanks a lot.

 

I'll never tell.

 

Yes I have heard of it being done.....
There is also the Sharpie trick....
Cut the pointy end off a sharpie, and insert it over the end of the injector, and then using the large blunt end of the sharpie to ease the insertion. the last set of o-rings that i bought at napa, came with a "sharpie like" plastic insertion tip in the kit.