BMax setup questions

[andys]

Ran my bmax for the first time last weeend, indoors on slippy floor at York club.
Car was good, but back end wasn't very planted. I did run my 4.5 in it which won't have helped !
A few setup questions for indoors :
1 roll bar on the rear, yes or no and why ?
2 roll bar on the front ? What does a front roll bar do ?
3 ride height, level or raised front or rear.

I'm running ae shocks, no 2 pistons in the front with 42.5 and
no 1 pistons in the rear with 32.5, silvers on front greens to reardiors that sound right ?

Lastly - weight, are people adding more for lipos , if so how much ?

Cheers