Try saying NOT to stay under the rollers. You have the 7" rule built into your jig but the machine will measure to the very end of both 3 1/2 pieces. I use a jig like this all the time and always say not to stay under the rollers. I also say to center on board. Give that a try and report back.
Also if you're on the internet look up Carvewright Carvaholics, seems that there are a lot more users using that today. Hate to say it but it's true.
CarverJerry
ver. 1.188 Win 7- 64b with 6 GB ram @ 2.8Ghz and dual 1Tb hard drives. Rock Chuck & Ringneck vacuum system hooked up to a Harbor Freight large vacuum. Center line text, conforming vectors.