Hi Andy, It has come up a lot better now after a couple of serious bouts of wool and oil, and has had nearly a tin of wasps through it already!
Also,or some reason it shoots far better using the thumb under the trigger guard, and two finger support Technique.
Had it out today again for an hour or so between showers, so maybe in another week or so it will be "run in"....only 100 years late!!!
I will chrono it again maybe tomorrow to see if anything has changed power wise, but it seems significantly more "oomphy" than my other 43" guns from this era, I have another with a good original set of springs and a newish washer set, so maybe the key is the tap sealing. I am toying with the idea of knocking up an expanding baffle to insert ahead of the cocking slot to seal the chamber on these guns, with a shrader valve fitted to allow pressurizing the chamber and seeing how the taps compare, will get round to it one day!
Best regards, Eddie