I have not used it for years since I have tested all my rifles speeds. It was lying in a drawer with dead batteries for some years I believe. So recently I went on a shopping spree, buying a few pistols/rifles.
With each of them, the velocity I got was 100fps or more lower than the sellers claimed.
So I tested my Webley Axor, received freshly serviced from Kevin (Airvolution) This rifle gave me all the years, I own it more than 13 years, an average of around 904 fps. Now it shoots at only 798 fps average. This confirms my suspicion that my Combro 625 might need a factory reset or something.
Can I do it myself?