I did try the bars up side down but thorth the same iang,pointing up, sounds like a set of risers mite help, if you want I could send you some jpegs of the varons I fitted, but I cant put them on hear so I'll need a email ads .
hears a good one for your neck, sounds like we have the same prodblum.
is to lift you helmit slitely say 5mm, just a small lift makes it beter, you have to lift your head more to see when you have a helmit as it sticks out like a peck just abouth your eyes.
I'm not saying it's a perfect solytion but as i've found out it's little bits as opposed one thing on it's own and the risers do help.