Yes, the centre mount is the benefit for the most part - that and the O-rings.
The thing with the inserts really though, is once they are done and the bike set up, 99% of the time, for 99% of the population, they will never need to be touched again.
I'll put 50p on it that they probably aren't going to be significantly better than the top Honda head.
_________________
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!