When I first ran my Mardave, it was fun but complete rubbish.
Modded it substantially and finally had it setup so it had steering and rear grip without griprolling ( had to use 42mm fronts though).
Then switched to the GRP chassis, and really wished I hadn't!
Got so fed up with it, bought a supa, and like the name says it's super.
Again you have to put some time in it, but I don't think I'll ever look back!