Mine almost never pulse - they "wave" and if the water circulation is off for anything they will droop.
At first the lack of pulsing worried me, but since they have tripled in size since Halloween I'm not too worried about it anymore.
I have them under VHOs. The guy who fragged them for me had them under MH
and they pulsed for him - Not all will behave the same way, but this was my experience.
Where in Oregon are you lcoated - There is a local marine society meeting on the 19th in Portland, I can fwd you the info if you are interested. Lots of good guys/gals and lots of trading...