20mm flat wood bit -- drill 4 evenly spaced holes in the front slope of the airbox lid. Should be obvious when you look at it!
Short length of duct tape -- for covering two holes on colder days/evenings to richen it back up a little if necessary!
Simple.
_________________
Andy.
NSR-WORLD.COM
Please keep all responses to Forum posts on the Forum so that others may benefit.
Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.
Check us out on Facebook! Please "like" our page!