Thanks Ben, I have one of those filtered IEC connectors rescued from some old piece of kit that I've been meaning to try for a while now - if I can find it I might give it a go with the next set to see how good it is.
I have a couple of ideas for shielding the mains tag strip - and I think I found the missing video file with the final alignment of the set as well so I might do a part-5-ette once I can find the darned fuse holders that seem to have gone into hiding.
Its an interesting point you make about an unbalanced chassis on the bench too - another one of my 'round tuits' is a chassis cradle so I can spin a chassis to any angle and have it be secure and stable. Some sets sit upside down perfectly... but not many.
There are no personal problems that can't be solved with the liberal application of high explosives