Guys I'm using 23 G needles and have been through an amp already and had to throw it out cause the oil kept filling with air every time I would tr to pull the sust in the needle. It has a fucker of a time pulling on the oil and than even when I think that I'm pulling on the plunger reeeeeaaaly slow it pulls up and sucks up a shit load of air and tiny-micro bubble fill the oil. It's pissing me off? My friend has been through a map too trying to get this shit right without injecting us up with air bubbles. Can you guys give me some suggestions as to what the hell I'm doing wrong or what I have to do to get this shit in?