Fuel Problem, Took Duster for a Shake-down Cruise

Well if you are going to replace the filter, do yourself a quick cut and look on the old filter. Cut it in half and see what's in it. That will answer one question for you.

It could be the sock on the pickup in the tank plugging up. It could also be a venting issue, if your gas cap isn't vented that's a problem. Have you ever noticed a whoosh of air when you take your cap off?