Decided it's time to get rid of the caltracs and leaf springs all together.
Tried it without the caltracs and it still tramps even with the shockworks rear dampers.
I've tried 2 different types of bushes with the caltracs. One being a sleeved poly style bush and even tried a modified ford bush. The Ford bush lasted 3 weeks and the sleeved poly bush split pretty quickly, I'm assuming due to being a bad batch of poly as it was custom made.
The ride wasn't really improved with either bush as the brackets that sit around the leaf eye squeak alot and I've found that grease only lasts a week or so before it gets noisy again.
So to well and truly sort out I've ordered a 5 link from performance suspension.