I got the xyron 500 for Christmas and so far I hate it. It leaves glue boogies on everything. I spend more time cleaning up the excess adhesive than I would just using a different adhesive altogether. Is there something I am missing? With the little X, I press down on the outer plastic film and then use a stylus around the objest. There is almost no residue. Since the 500 doesn't have that outer layer I can't do this. Thoughts?