[Sideband]

Don't worry about a few volts in a valve set. Your digital meter won't give greatly higher readings, if at all in the output stages or rectifier. It's only low current stages where it will (might) give higher readings. Low current stages being the RF and IF stages and the audio pre-amp in this case the EABC80 where it might give higher readings for the triode anode. If the anode of the output valve is 242V instead of 245V....that is pretty much spot-on...nothing to worry about. Most voltages will be within 10 to 20% and you will find even with very low HT, the set might still work quite well with possibly lower volume/reduced sensitivity. Mains variations will affect the HT and most sets were designed to cope with that.

I might question the 25V reading for the Tuning indicator anode although that will have no effect whatsoever on the performance of the radio.

Without looking at the circuit, I'd say those readings are OK.