I know you said new but I'd suggest a good used non Mallory electronic OE dist & take it apart & clean/lube it & reduce the lower shaft end play to .005". Taking the clip out is a pain but when you get the springs/slot length finalized your all set & the real power is in the coil/ballast combo & the dist is pretty much just an on/off switch to trigger the ECU. NAPA has an Echlin #MO3000 rotor for $8 & change that has a .060" longer blade & check/correct the rotor phasing. You could clean/polish the exterior to match the quality of your new eng paint/finish. I understand there is something that ain't quite right with the mechanics of the new Mallory based MP dizzys