FX Wildcat fill gauge question

I haven't been too active on the forum lately so I apologize if someone has already answered this. I bought my .25 Wildcat last year in December and the fill gauge pressure has always showed 12 bar lower than the pressure in the gun. Is there anything that AOA will do to fix this problem or is it too little of a problem to bother with? The 1 year manufacturer warranty will expire next month so that's why I'm trying to figure this out now.
 
"Dave09"Can some one put a picture or a link to the Part I need to buy to adat to the fill probe for the wild cat I bought a 1/8 inch bsp fitting from pyramid air but it don't look like it's the right one
I think this is what you need? The threaded part of the wildcat probe should screw into the female end of this.

http://www.pyramydair.com/s/a/Air_Venturi_Male_Quick_Disconnect_1_8_BSPP_Female_Threads_Steel_Rated_to_5000_PSI_Incl_Delrin_Seal/3550

and end up looking like this