Sounds like you are using tube glue if you are having control issues. Use a toothpick to apply the glue and do not squeeze from the tube. You may find it helpful to squeeze an amount of glue onto a small piece of cardboard or a flat piece of unused plastic from the sprue (like the area where the part number or brand name is).
Then use that cardboard or scrap piece of plastic as a pallet to scoop glue from with the toothpick and apply to the surfaces to be joined.