Ok so I took the car out for a bout a 20 minute ride last weekend and now the ammeter gauge needle is bouncing to the right.
It's not pegging and then coming back, it's not that bad, but it's very noticeable.
At idle it'll bounce slightly , no load so less bounce I guess.

So any suggestions? I have already checked if the new voltage regulator is grounded properly, and sanded the bolt threads etc. to ensure a good connection.
The car has a Petronix electronic ignition, if that helps.

Suggestions??