Not sure Musky. Just coming back off a 24 hour no comms, no phones, no 4G and largely no leccy spell, which has been boring. (Annoying, as we had wifi and leccy through the worst of it!) But, I'm happy, I still have undamaged roofs. Some people don't, and there are poles and leccy & phone lines, along with minor localised flooded roads, all over the place. With trees adding to the mess. Neighbour reckoned the gusts hit close to 160kph, and said there were gusts on the west coast, 30 miles away, measured at 207kph. Now that IS a breeze. Luckily, out in the sticks houses aren't built on flood plains - the guys that built these houses in the 17 and 18 hundreds knew where not to put them in a flat marshy area close to the sea, with rivers flowing all around.
Goffy lists lots of ammeters, including 'genuine' Lucas - but are they same as back then? Dunno what 'genuine' means.
See
http://www.norbsa02.freeuk.com/goffyelectrex.htmBit of a lottery - maybe Andrew has a known-good option which has at least some damping.
Personally, I've favoured the bigger 2" Millers, which I've found, long term, to be a) accurate, b) stable and c) sit at zero when nothing's on. But not an option on a bike with correct bits usually, and I've only used them with replica or universal type headlamp shells of no consequence. (Apart from on my Miller-equipped LE Velocette of course, where it's standard.)
That said, the one you have and your digi-meter both say there are high currents flying around - and the one you've got didn't show it before, so I'm not sure replacing will do it. I'd fit that new regulator, and look at anything powered other than through the ammeter as first moves.