[JaxBoater]

Thanks Molar...I finally got the plate to separate from the post. It took a few whacks with a hammer and then standing on the plate and giving a good pull on the post. The problem now is what appears to be a hard plastic or rubber bushing on the spindle of the plate. This is what locks the seat in place. I have tried to get it off to no avail. Any suggestions, or do I need to order this whole assembly? The plate is in bad shape and bent, so I want to replace it. I am attaching a couple of pics.

As far as the drainage issue, I forgot to mention that this is occurring when it on the trailer. Even with the jack fully extended it does not drain. I have to mop up the water with towels. If it not covered and it rains, the water sits and evaporates leaving stained areas. It just seems the drains were installed too high. I am considering installing a new jack to get more elevation. I can't get blocks under it as there is just enough clearance to swivel it to the down position. Any thoughts?