KJW P226 shooting low?
 

I'm brand new to airsoft and so this might be a stupid question:

I have a KJW P226 that is shooting 2" low at 7 yards (tried w/both mags - which were newly gassed up). I adjusted hopup to full backspin as well as minimum backspin. Neither direction got me closer than 2".

Any suggestions on what the problem could be or how to correct it?

TIA

Better hopup rubber