Hey George, How'd your shakedown trip go? As for the trim, I replaced my shower vent with a Fantastic vent. Easy to do, the wire for the motor is already there. If you go this route, order the 'deep' garnish, as the roof cross section is about 1" deeper (thicker) than what the standard trim garnish will cover. With the fan on, you get a nice breeze thru the TT. Might add the Fantastic vent cover too, while you're at it so you can keep the vent open when it rains.
Bill, Kathi and Zorro; '05 Beaver Patriot Thunder
2012 Sunnybrook Harmony 21FBS (SQEZINN)
2007 Jeep Grand Cherokee Overland