Originally Posted by COLD AS ICE

May be a good idea to rebuild them. Take them apart and clean with motor spray, wipe them off and blow with air compressor. Put some grease into the outdrive itself and on the barrel piece that the set screw and pin go through. Try using the Hudy graphite grease, it works wonders. I do this routine about every 3 race weekends. Sometimes more. I usually run in the super stock class (13.5 blinky) and never have chatter issues except when the cvd's need cleaned and greased. Hope this helps!!