If you just have a little wiggle, a little rudder loading could be the answer. Grinding the trailing edge will result in a pull to that side (generally the right on LHR boats like MC). That pull will allow you to lock in your track without constantly having to correct for any steering slop.
Previous: 1993 Prostar 205
Red 1998 Ski Nautique, PCM GT40, 310 hp, , Acme 4 blade, Perfect Pass SG/Zbox.
Be kind. Have fun.