Or maybe a good site that goes into detail on how to restore a TT in general.
For that I would recommend this board! It's a great resource for restoring any fiberglass "egg" trailer, such as your new Play Pac (
You can try searching, and if you don't find what you are looking for, well, sometimes I just go to either the "Problem solving" or "Modifications" sections and just start paging through, clicking on whatever looks interesting (note that you can jump to a certain page number, so you can pick up where you left off the previous night at 4 a.m.
Note that although there are some things exclusive to each brand of trailer; there are also a great many things that apply to any brand, so you may glean some excellent info from "non Play Pac" threads as well.