My jeep slips of the line since I put 33's on.?

It is an auto trans, would a regear fix this or is the problem bigger. I am planning on having the gears redone to a 4.56 on both my dana 30 f and dana 35 r axles. However, i wanted to know if i should still expect the slipping once completed. It doesn't slip any other time except for off the line ( 1st to 2nd gear)