Thanks for the replies and offers to analyze my chipping. After thinking about it, I realized that my chipping technique was some bizarre mishmash of several different things I have seen/heard without any consistent plan. I need to start over with a real plan. Therefore I don't think watching my old technique would have been useful.
I decided to go with phil mickelson's "hinge and hold" for pitch type shots where I need to stop the ball or get backspin. I watched that video about 2 years ago and was chipping well for a while, then kind of got away from it and tried different things.
I also watched a Dave Pelz video where he describes how he essentially putts with an 8 iron for chips where there is green to work with.
https://youtu.be/DF5G24FFAP0
Went to the practice green yesterday evening after watching the videos and chipped about 120 or more balls. Seems like I can "hinge and hold" pretty well with the sand wedge, but doing it with a 60 deg is a bit erratic. Even was getting the ball to check up a modest amount pretty consistently.
The putting with 8 iron technique seemed to do OK after I practiced a bit. definitely is consistent, no real bad shots.
Going to stick with these two techniques and practice a lot and see what happens.