Hi guys, guy on my Mustang forum recommended this site. I've got a 91 Larson with a 3.0 Mercruiser Alpha One, my dad bought it new and it has only 212 hrs. Long story short it overheated and cracked the head. Found a replacement head, replaced impeller and thermostat. Boat runs great and cool now. My son used it for 2 solid days and then on the 3rd day it wouldn't shift into forward, just revs. How do I adjust the shift cable? Did many searches. The adjustment barrel is pinned in place. Everyone says its a specific process to follow, but no one will say what it is!! Help!!