I just installed a civilian 230 distributor on my military M715. Two questions. I hooked up a manual hand held vacuum tester (pump) to the vacuum advance port on the distributor with the rubber hose and squeezed the trigger, building vacuum. The vacuum advance arm then moves inside the distributor. Once I stop squeezing the trigger on the vacuum pump, the vacuum advance arm slowly returns to the stock position inside. I am assuming that this is working correctly?
Also, where is the easiest and best location for vacuum advance hookup on the motor? I don't see any ports above the carb base?
If worse comes to worse, do you really need the vacuum advace? I know I'll be sacrificing gas mileage and some off idle driveability...Opinions welcomed.

Thanks!