Best advice I can give on this is to thoroughly read all the posts in the "XLR" section. There's a boat load of great info and mods that people (not just me) have done to their THs. There are several very active members with both the 27hfs and 29hfs, and they could probably give you even more specific pointers on your model. Mine is a 5th wheel and I know lots of stuff is different from the TT versions like yours. I'm always happy to answer specific questions too. I've done quite a few mods to mine, the electric sewer valves are my favorite one, I think. Mounting the wheel chocks was an adventure too because of the gas tank under the garage floor. Ask away!