Tony Tiger - Is your leak from the entrance door? We have had the entrance door worked on several times as it has always closed very hard. On one fix they took off the frame as well and did not caulk properly around the top (I guess you would call it a drip rail that is part of the door frame) it leaked really bad in the next rain. We took it back for re-caulking and has never leaked again. You have probably already checked that, but that is my only suggestion as it was strange the rain came straight down to the floor and totally missed the padding above the inside door. Guess that happened because door is curved. Anyway we are still not pleased with our door and next time will request new door and frame be installed.
On our 225 we think we get about 12 mpg on the highway. Let us know when you trace the leak.