So I put a few rounds through my rifle and my initial feeling, totally non scientific I know, is that the handguard changes the recoil characteristics on the rifle. Having the two gas port holes convered made the recoil force feel different. My two brakes which worked amazing before now feel like they over gas forcing the muzzle down too much.
I removed some material on the handguard around the gas ports and I'll try it again.
I may even open up two large holes in the handguard under the gas ports if necessary.