[Darren69]

What he and others have said, really. I think the risers are a popular mod for those bikes and it seems like a drastic mod you're proposing but I've not heard anyone else having those issues. I have an S4 and I know its a different frame with different geometry but I never heard of anyone else having these isssues with either frame and I did a similar mod on mine for the same reasons with a longer tie bar and it is much better and I've not had any rear grip issues. Sorry I can't offer any more advice.