Well I decided to give it a go this morning, couldn't sleep so was up early.
First off, I unwrapped the ER6f and had a butchers at the nose. The height of the vent is about 4 inches.
Marked up the Vee using some line tape.
Masked off the upper area just incase I goes astray.
Cut what I could using a 1mm cutting disc on my grinder.
Leaving some raggy edges which I then had to file and sand.
After a bit of flame polishing.
I then went to mask off the back side of the screen so I could blacken the lower section while the screen was off........ and the inevitable happened!
Anyways, it was pointless gluing it back on, vibration would just snap it again so back on the bike it went.
Just had a short ride and its inconclusive. There is still some buffeting but hard to gauge how much at this point. I need to go out for a good ride so for the time being, the search continues..........