if it were me, i'd take the .107's out of the secondaries and put them up front with the stock 71x47 rod. stick some 100's in the back and go to .028" squirter; as a starting point. a friend of mine has the 800avs on his 427 corvette and we went fairly big on jet down sizing.made a remarkable difference. i also look at total jet area (square inches of area) rather than just changing sizes. i use the 4% as a step rule.