A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
I had this clicking sound recently. Allways had the spring slipping in the seat sound on full flex but this was different as it was clicking when the load shifted from side to side before full flex. I too have recently had the radius arm bushings changed. Seems that I did not tighten the bolts enough so the holes in the rear axle bracket was worn. Made some washer with the correct inner diameter of 11.8 or 12mm and welded them to the outside of the brackets before tightening the bolts very hard.
Noise gone now!
I will never use any poly bushings again if I can avoid it. They wear out too fast from sand and are way too stiff.