Yes the stock plate can be moved, but be careful! The reason that I have not done it is because it runs the EGT's up all along the rpm's. The aftermarket plates control the fuel to the rpms where it is best used(powerband. . sweet spot). I know guys that have moved the stock plate,but they have guages and they watch them real close. Moving the stock one 1/16" forward makes a difference. If you dont have a pyro,,don't move it until you get one.
Rick