when i put the needle in the vial and hold upside down to draw i feel like when i pull back on the plungers for the first like .2cc or so it draws in nothing but air and then the syringe will slowly start to draw in the oil...so basically i have to push out all the air after i take it out leaving me with less oil then the 1cc i need, so i stick it back in and draw up some more....is there a good method of drawing the oil that i dont draw up and not get any air