Ok, I got back home a little while ago (wiped out from working/traveling), unboxed & gave it a quick once over. One thing that I forgot to mention earlier is that the "black bat" type standby switch has been replaced with a normal toggle type. I'll put an original Toroto type back in there.
As I previously mentioned, the filter caps have been replaced at some time (lacquer gone from solder joints), though obviously some time ago as they've been replaced with the original Hunts Daly types, quite rare for some time. The relief seal on the main filter is showing slight signs of swelling (not badly), so I'll replace the electrolytic filter capacitors, including those in the bias supply. I have all these on hand so will probably get to it over the weekend, along with performing all other necessary checks, then, all being good I'll install the valves, which were shipped all protectively boxed & clearly marked as to their positions, bias the power valves & have at it. Cheers