I can confirm that the Aiwa's have arrived back with me safely. Galaxy's pace of work is affected by their workload and priorities. I did have to risk being an annoyance to them, in order to get the units returned to me this week. Regarding the courses, they intended to do regular courses, but take up wasn't initially high enough to warrant setting up the lessons. My name is on the list to be contacted, if interest rises to a point where they run the courses. So I'm back to trying to find local electronics courses for someone at beginner level.