Joshua,
Not sure with regards to your specific bander but spec's say its a cartridge bander, we have a 1435Se. A lot of possibilities but if your getting too much glue and your air pressures are to spec I would guess its not a glue temp issue but you may have some clogged/old/dirty glue in the glue head that may not be allowing it to close completely. Or your glue nozzle may have been partially blocked/plugged and after running it a bit has opened up allowing too much application. This could either be (plugged nozzle) the glue being applied too wide (piling up on top of the board, dripping off the bottom) or could be too much volume (excess glue being squeezed out in the pressure roller).
Not sure on the 1310 but you may be able to actually see the glue being applied to the part as its fed. If the faces are clean it may be a volume issue. If the excess is squeezeout you may likely have a volume issue applying too much material.
On our machine, if your nozzle is plugged its simply cleaning. If your feeding too much material on our machine you throttle back how much the gate/valve on the head opens.
Hopefully you have/had the tech's number and he can walk you through some debugging.
If it was a used machine that had sat for any period of time and your having glue application issues I would highly suspect some old cruddy glue. Cartidge machine I would warm it up and as soon as you can pull the old cartridge ditch it then clean it out and run some fresh material.