Thanks Captain B, that video is very helpful! I really think the neckstrap is something I'd benefit from. Resting it on my knee is helping too. I have rheumatoid arthritis which, in spite of taking a boatload of medications and supplements, is a source of much frustration. Grrrrr. But at least I can still play guitar and do most things I need to.
I think some of the trouble IS that the action is pretty stiff and it was never a good instrument in the first place. It's an old Hohner. Very soon I shall have to make a trip down the road to Bob Tedrow's place and see what he's got around that I could afford. :~0