Hi. Lately i have gone from using 23g 1 1/4 pins to using 25 1 inch. This is because i can no longer get that size and i have also gone from 2.5ml syringe to 5ml. I did find it easy with the 23g but i cannot seem to push the juice out smoothly with the 25s? Is this down to the smaller size of the needle or isit just the size on the syringe is forcing more air to be pushed? Thanks guys.