ok i just wanna make sure this is right,,,when i draw for lets say a 2cc inj. i draw exactly 2 cc's into the syringe,,,then when im ready to shoot and push up on the plunger (get air out etc.) the syringe reads a lil less than the 2cc's,,,,, So my ? IS its really @cc right<> i just feel like im not gettin a full amount<<