Gasket, I've had the 25" Clearview for 3 years, and like it a lot. Some dame dropped by bike and broke a chunk out of the right hand side, but it almost looked like it was designed that way to fit around the mirror, so I've let it go for a year.
However, I just ordered a new one because I want to look really, really good at the Tahoe Salvo. Normally, Clearview is pretty slack about filling your order. They say 4 to 6 weeks. Count on 6 to 8. I don't have that kind of time, so I called and left a phone message (nobody ever answers the phone at Clearview) inquiring about "blemished" screens, or whatever they might have in stock, for a Rocket. He called back a few hours later, and said he had a handful of slightly blemished to choose from.
I ordered the light gray, smoked 25" with the vent installed (my old one didn't have a vent). I saved 20% off the cost of the screen because of "1/4 inch light scratches (buffable)". I have mounted it, but unable to report on the effectiveness of the vent because my gas tank is off for repairs. It looks like it might be worthwhile. As for the scratches...I can't find 'em.
Total tab, including shipping was $220.04
Remember, you've got to have the Triumph screen fixing kit...Clearview doesn't sell or supply mounting bracketry.