Finally got some new Dobinson suspension,
5 years of standard springs and shocks and now... "ohhh what a feeling" to steal a catchphrase hahaha
Had the shudder but flipped the center bearing and it has gone away, which im very happy about and thanks for the tips everyone. Followed the suspension install guide and we were all good. Took a bit longer than expected though, by myself did the backs on 1 day and then the front on another. Had to get some new spring compressors and also found the top nut on the front shockers had rusted quite badly and was solid, water gets in but cannot get out by the looks of it. but lots of rp7 and impact driver got it off so i could reuse the top hat for the coils.
Now for some adventure to see how it really goes.