Bumping this thread to give a small review and pass along one small tip that may help another user.
I was finally able to put the lopper head to use this spring, cutting Populus spp. branches on seed collecting work. At 21’ the lopper head was probably still easier to use than my 14’ wooden handle version. Everything was very smooth. It did feel like attempting professional visual pruning cuts at 21’ in the front yard of a million dollar home, well, I can’t speak to that application, thankfully.
So I am very happy with this investment. It was a very nice touch by Notch to send 2 sets of the mounting screws and nuts. I was hoping for a quick change option in the field to go from saw blade to looper head. I guess unsurprisingly, the looper head uses more than just the push button that holds the saw head - two nuts need to be threaded on two short studs also.
It was just my bad luck that the day I went to do this, that particular socket turned up missing, and so did a small crescent wrench. Gremlin attack on tool box. So I just spun the nuts on there, finger tightened them, and got right into using my nifty new extra tall lopper; worked just fine.
I did not discover the problem with this approach until a week later. Finger tightening the nuts was just fine for using the tool, but not for transporting it. Driving around managed to loosen each nut and make the little stud fall out somewhere into the wood chip debris surfing around in my truck bed - was so glad I had the spares.
So, if you put this pole saw + looper head combo together, do it right, with a wrench.