Okay i have a 1990 monterey with a merc 350 alpha 1 gen 2 i just rebuilt the trim cylinders and now want to bleed the cylinders the instructions say to "plug the holes in the hydraulic connector using plug # 22-38609 or suitabble device".....what is everyone using to plug where the hose comes out of the little block under the stern drive??? i need to block this to properly bleed the system of air yet i have no idea what to use? please help