I hope that the replacement screens are to the later 4.9mm specification? My later spec screen has been fine but the early 4mm cracked at the lower outer radius where it enters the bodywork. As Bunny mentioned, the later spec screens are more difficult to install but seem to last well. Overall the Fairbourne screen is a good design, a shame it has been discontinued. I particularly like the extra width that protects the outer hand on the steering wheel from wind blast, something the Morgan copy is missing. Not so keen on a drizzle day when visibility is difficult and requires a "wiper hand".