Hello "Helmheid", and welcome to NSR-WORLD.
Have you considered an NC30 or NC35 (VFR/RVF400) chassis? It may be better with a little more room. The NSR frame is quite narrow. That way you still get the Pro-Arm, and frame looks very similar to the NSR250 too.
Several people have used the NC chassis to fit NS400 triples into.
_________________
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!