Turn down the heat, the ICC profile they give you is way to hot. Should be about 185 max for the Brightline or it curls and scratches the vinyl coming out of the heaters.
Also 16 pass with interpass delays set manually if needed after it start running, from the manual adjustment on the front screen of the printer.
Weight it down coming out with magnetic strips to give it weight so it doesn't curl and scratch on the heaters for the first 6 or 8 feet, until you can get it on the take up reel, which helps keep tension on the perf, for less problems coming out of the heaters again.
Last, I have found that when we run perf on a cold machine at the start of the day, we seem to have more problems. The problems start as the machine is warming up and curling the perf as it tries to reach operating levels. We try to run something else first, or do anything to warm up the machine prior to running perf.
I hope this helps!