FPS problem

[Illidan]

I'm using a tippman 98 with bigshot barrel and centerflag 683k. I can not get the velocity over 251 ( usually cant get it there). The paint is bigball and it seems to match up well. The tanks out put pressure is 750. Whats the problem? the tank is full and I heard 750 was enough to run my tippmann by many ppl. Any ideas?

[illusion]

u got anything else on the gun?? upgrades??

[llSmithll]

might want to check that barrel/paint match, it might be too small

[Ejp414]

probably because of the output pressure. Have you tried stretching out your drive spring a little?