i have a 571 571 lift 276/282 duration 224/228 @50 cam, stock lq4 lifters, trunion kit , and pac 1218 springs.. valves very noisy and I know the cam was reground from a damaged large cam so I checked pushrod as some described on internet with 0 lash then rotation and was bit short so I got 7.450 pushrods and helped some.. buts its still very annoying... is this common? .. is it lifters or the trunion upgrade?