Extra ink, extra printheads, extra material but what else should I do or know before a long run like this. I just did a long run and all went well till the printer started printed red and I had no idea why. Or when some of the prints were too small and I had to do them. My friend suggested doing printhead tests, calibrating and running a small test. Are they're any other tricks anyone wants to sharE? Looking for those who are used to doing huge runs for their tricks of the trade. I only got one 54" HP latex 315 and I really wanna get this process down so I can take on this job I got of over 2000 square feet.