My tip is slightly less easy to follow, but I suggest you substitute a SNAPS for the FlatCap. The SNAPS is the original, CB power supply Naim made, I believe, to power a preamp (not .2) and a tuner.
It has two independent single rails of 24V each and a fine Holden&Fisher transformer identical to the NAP 110's. It only needs to be dual railed, which means that it has to deliver both 24V rails from a single, 5-pin, DIN 240° socket instead of each from one 4-pin, DIN 240° (the first two from the right on the picture below), but that is something any competent and authorized lab can do in 30 minutes.
Finding a SNAPS may need a bit of patience and some 2nd hand browsing around, but when you find one (either original or already modded) I think it's a worthwhile addition.
You'll so have a 'mini' HiCap which – my opinion only – will sound better than a FlatCap. Plus, it will match the rest of the amp section (and if I am not suggesting a CB HiCap is because I find the SNAPS more musical, less 'muscular').
(Richard, I think that for this tip a thread called the Teenage Corner could be opened.. but let's keep a low profile).