Answering two questions:
One note on the grey trimmer in one of the pics. Looks like those were the ones you needed extensions for. As long as it's electrically sound, there's nothing to worry about. However, now that it's further away from the board how stable is it when trying to adjust? The legs look to be in close proximity to some other resistor legs, so if it moves a little when the screwdriver and some force for adjusting is applied, you may want to desolder them and insulate the legs before resoldering. I'll often just use the insulating sleeve from 14 ga Romex that's stripped off of a piece of scrap wire. Same can be said of insulation stripped from stranded wire, or if you have 1/8" or less shrink tubing.