adambledsoe1978 wrote:
What the crap???!!! If it's not one thing, it's another.
Welcome to boating.

Seriously, you're likely to have a bunch of stuff like this pop up when you take over a used boat and start using it more than it has been recently. Rule of thumb on trailer tires is that they should be replaced every 5 years no matter what they look like. Are yours original?

When you got the old impeller out, were there any missing pieces?
As to lights, in '04 FW hadn't yet switched to LED lights. This would be a perfect time to swap them all out. You'll save yourself a bunch of headaches later, your trailer will be more visible at night, and it will look better for what that's worth. I recommend
http://www.optronicsinc.com/oemtruck3-new.html with the following part numbers:
STL-36RS Passenger tail
STL-37RS Driver tail w/license
MCL-95APG Fender front side markers
MCL-35A32G Winch post amber square
MCL-97RPG 3-Light bar, stainless steel