I wouldn't recommend using LW suspension with foam. You get bad coning on the front wheels no matter what camber you run, even with hig rollcenters.

I have used the old suspension with 26mm foams many times on the evo3 and tao4. It works fine you just have to trim a little off the inside edge of the front wheels. I think tamiya sells a ball end with a shaved top they may help this too, or just cut the top off yourself!