Air Arms Owners Club

I have been lucky enough to get an EV2 Mkiv at a reasonable price but have started to experience dropped pellets at irregular times. Did a chrono check came up with a fps spread of 17-20 fps?? thought this was abit high but when I checked against accuracy seemed not to make much difference, I had wayward pellets from similar mv. Could this be reg creep, read somewhere that the EV2 if left for a few minutes needs a couple of warm up pellets? Any suggestions or am I being too picky?