FX Royale 500 inconsistent

I have problems with my FX500. Not what happens but I have a difference of 40 m \ s in 65 shots ... The gun is new shot about 500 shots should have stabilized the regulator or have to shoot over another 500 shots?220 bar up to 150 bar is only 65 shots more or less the shots range from 920 fps with the slowest shot below 800 fps. It is too inconsistent to be working well ...
 
In less than 1 hour I had FX response. What is extraordinary...

Here it seems that no one had the same problem as me, only one person has given some support.
"
Hello Sir,
Sounds as if your regulator is acting up, if you are able to remove it from the breechblock and send it to us at FX i will make certain to get it fixed.
Just note a message with “xxxx” and add this E-mail.

then I will fix it for you free of charge.

Best regards xxxx

"