Something I've been meaning to ask. Are the snap on/off port window curtains standard on an '04 280 DA? The '06 240 we traded in last Aug. had them and I have noticed in other member's photos of their 280's that they have them. There are no snaps on ours and there were no curtains that came with the boat. I don't see them listed as standard or optional on the Sea Ray website. Anyone else not have them?