Do both. In fact buy the Harmonizer tool which is made by an inmate here and really works, I say. I never had any luck with manometers but when doing cars the standard vacuum gauge works great. On my bike it's the shorting rods and/or the Harmonizer.
Good to hear from you HH. Been laying low I think? Hope everything is OK.
How about those rods made by Ranger Guy? You don't think you could find some longer ones do you? LOL