well took matters into a make your own tip! I had some deluxe materials syringes and metal tips and a 3/8 inch evergreen round hollow tubing drilled the old tube hole to allow the 3/8 inch tubing to slide into top of bottle and then filed the plastic area of tip so it could slide into the hollow 3/8 inch tubing and cleared a bread twisty so have 1-1/2 inches of metal to clear the metal tip after I use the zap a gap glue.
at least I can use it up until its all gone. I came across both model masters cement for plastic models and testors cement for plastic models the model masters cement has a plastic tip and the testors liquid cement has a metal tip so far neither one has plugged up after each use the masking tape is to keep lid over glue tip snug.
