I'm wheeling with 2 kids right now so that's why I'm buying my time. 6 yrs on original design Tera arms, pretty good and probably too long. Those bushings are not bushings. Replaced the arms with the newer design ones I had sitting on the shelf. Got them from a co-clubber when he decided similar to what you did.
When I get down to one or wheel by myself (probably less in a yr-1/2), I'll remove the rear seat, raise the gas tank into the floor or on it, redo the suspension for better geometry (3 link front, 3 link rear w/upper wishbone), redo the rear portion of roll cage, lengthen the wheelbase, flat belly and even finally toss in the doubler.