has your got the little grey levers?
I lost one somehow and was forcing the visor off when I broke mine, hence why I said if you change it properly using the little levers you shouldn't have any problems
I've been wearing Arai's since the early 90's.
The only time I've broken them is during crashing. I don't take the visors off that often though.
Do you take yours off a lott.
before I bought a caberg with an internal sun visor I used to change from clear to tint regularly, probably a couple of time a week.

Iesi Mawr 
Edited: 02/01/2009 at 09:37