Make sure the fletchings are indexed so that they are not contacting the brushes when the pass by. Also make sure you not contacting the cables.

Have you shot at different distances? It hit further left the further you go back?

Try moving the rest slightly. If it improves try a little more.

Is the grip on the Marquis much different than the one on your old General? Could you be torquing the grip on release?

Just tossing some ideas out. The tuners should come in soon to cure your problem

good luck man!