just thought id post this here rather than via PM
unfortunately I could not advise you on how to fix the velocity problem as it never happened to me. The gun was working perfectly when I sold it to you, i never experienced any first ball drop off.
in regards to the PM you sent asking me asking for a refund or to pay for the repairs. I feel I am not responsible for a gun I sold to you a month ago as I dont know what you have done with it while you have had it.
If this problem had occurred the first time you had used the gun then I would have expected you to contact me straight away, in which case I would of happily given you a refund or paid for the repairs.