I am printing banners today and the current banner felt a little gummy so I increased the heat. Now it is intermittently "pausing" in between sweeps. The printer does not actually pause, but it is almost like it stutters. I lowered the heat to where it was before and it is still doing it. If I actually pause the machine it will run normally for several sweeps and then go back to the stuttering. Has anybody run into this problem before? The print is a 20' banner and it is about half way complete.