My front end is quiet right now but my rear suspension was driving me crazy. I found seized a-arm bushings were turning in the arm tubes and were also pinched in the mounts. Did a little re-machining and all is perfect now. I also went to a graphite-based high pressure grease because they say for this type of application, it should work better. So Far so good.
Always jack it up enough for the wheels to be off the ground when you grease the a-arms. That lets the grease go where it's needed first.