BSSO RB20 carb set up.

As the BSSO production class has now done a couple of seasons with the RB20, Franspeed race & VHSH30 combination what's the general consensus for optimum jetting?
I've used my RB20 for sprinting but feel the VHSH might offer a bit more top end than the PHBH currently fitted.
I've used my RB20 for sprinting but feel the VHSH might offer a bit more top end than the PHBH currently fitted.