I am printing with a roland xr640. New machine bought back in June of last year. All we are printing is banners, using arlon banner. I am printing on high quality, with the max temps. We are hanging them to dry for a day or two, but their sticking together when we ship them and ink is smearing. Any ideas on what could be wrong? I'm thinking I may need to either put some heaters in front or invest in one of the heaters that go across the machine and blow heat down on it but I hate to spend that much.