Thanks again for the guidance-I got sidetracked this AM, always seems to happen on a "Day off". Somehow my problem is intermittent-Need to get back out there after lunch and see if I can catch it "in the act". I just just have a basic Fluke77 digital VOM-no scope or Hz or recording fuction-and a Model 16 for/from my 2nd job in HVAC/R. Seems like we never can have enough tools...