Can anyone tell me if the reservoir cap for the trim pump on a 2006 SX drive is supposed to have any kind of gasket? I just bought a 2006 Four Winns 190 Horizon and I noticed the cap doesn't look to be original. Looks like it has a hole in the top and the white gasket on the inside looks to have a square cut in it with a knife where the hole is in the cap. Any thought?
