RE: dual rate springs
I have a set on my maxx that I bought from RcRaven.com awile ago.
I like them myself,My truck is on the heavier side and it seems to work real well with my truck.
But what they are is one spring with 2 differnt tensions I guess you would say?
The top is coiled smaller and Im not sure on the weights they are but I think the smaller coiled end is like 3lb springs,and the wider coiled section on the spring is like 7lb.
That way it will work well with average driving,abosrd some bumps,and the heavier side will take the jumps it kinda works together.
I would get a set just to see how you like them there pretty cheap like 10 bux a set,Give em a try