Just installed this new fan (
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1) in our bathroom on Tuesday, as it was an identical match to the other two roof fans that came with the Vegas. Also ordered the Maxxair Fanmate cover and everything went fit well. Make sure you have have a roll of Butyl tape to help with the seal and a tube of Dicor. Agreed that the the old caulk was a PITA to remove but with lots of elbow grease, install was not that bad you will be pleased with the outcome!