Hy Ferndale53, did you do comparative measurements of the thicknesses of the old and new gears? This may be the "normal" installed relationship between these new gears when installed. I would call the manufacturer, and explain that you're concerned about the relationship between the gears when installed. The only concern I have, is that if the manufacturer says the two gears should sit flush to one another when installed, and yours do not, then you have changed the camshaft timing either advancing it or retarding it relative to the crankshaft. When I used to build blowers for Detroit Diesel engines we timed the blower rotors by placing shims between the ends of the shafts and the gears, this would change the in/out relationship between the two gears and thus change the timing of the two blower rotors, hope that helps.
