TwinTurbo420

If you have the round, foldable sunshade, like this:



You may have found that sometimes it will not stay in place & you have to fuss with it to get it to stay bc the visors in the 991 will not hold it against the windshield.

Tip: release the visor from its clip & now you can easily angle visor to press the sunshade against the windshield firmly