What is the story on the hi standard? Which model and what's it not doing?
Believe the springs need replacing. I think Inspector said the action and trigger spring (or springs). Something about the reset spring felt week. Also probably could use a good cleaning as I think there seemed to be some crud where the trigger goes into the frame. My dad stored this one open (no case, sock, etc) in a filing cabinet, so seems like it collected a lot of dust over the years and looks like even some "bug stuff".
When Inspector went to shoot it, it fired one but the action spring wasn't strong enough to chamber the following round. He mentioned that it may have been the ammo and state (cleanliness and/or tight) of the chamber.
ETA - Looked up High Standard gunsmiths and seems like not many. Seems like there are some that do work for the .22 lr competition pistols, but those seem like the high end work stuff.