Laurence you are right in your assumption that genuine Lucas ammeters should have damped needles. that was definitely the case back in the days when our bikes were built. I can never remember oscillating needles back then. The complete opposite seems to be the norm with most of the ammeters currently on sale today, and this especially so when for example you by a repro head lamp assembly. The ammeter that I have just removed was marked Lucas on the face but there was no provision for damping adjustment on the back. The newly fitted ammeter is marked Lucas Made in England, and it does indeed have provision for adjustment. The only component in the electrical circuit that has been changed is the ammeter. I have always used an electronic regulator because I have booth feet firmly planted in the 12 volt camp, and that was the most efficient way to achieve this. Laurence I know that you are keen to stay with the original 6 volt mechanical set up, and I can see why you would want to conform to original specification. I think that doing this has much to commend it, and I am also keen on originality except in the case of electrics. I just think that 12volts has more advantages than disadvantages. I have one final mod to carry out on the electrics, and that is to swap the V2 regulator (as good as it is) for the DVR2 witch is even better still. I don't suppose amongst all of your bits and pieces you have an old mechanical regulator and cover that you might want to get rid of? In fact just the base and cover would do. It is for mounting the electronic regulator on.
John