Just so I have got this correct, your pole has the tapered thread on the number 1 section - this is the older bonded in insert not the newer insert that you unclamp so you can use Carbon goosenecks also you want something to screw on the end of the pole but will fit the green unger thingy

If that's correct I'll have a look at my fittings, I have some of these, I also recall using one on a pole but I'll have to look and see what I did

Brain isn't what it once was

Darran