sync. motor question

["Metlicka Marc" <mystuffs-at-orwell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

i'm sorry, i meant shaft end play not runout. now if i understand every
thing correctly on your site about the mod then i should grind the four
flats on this motor, correct?
and two electrodes for 120 bps?
if all ok then i will take the blower off and give it a go. i just want
to be sure because this is some kind of turbine type blower and i didn't
want to tare into it if it wont work.
thanks for all your help.
regards,  marc