I ran the dimec chassis last night for the first time at silverstone and I found it more forgiving and a lot easier to drive than the ally chassis. Not sure how much lighter it is than stock but I had to lower my shocks a lot to get my normal ride height
I would only really run weight if the track is wet or bumpy as it seems to calm the car down
Not sure if you were the black and gold car but if you are you have to much toe in and that can make a car twitchy
