what parts needed for hydro trim rebuild

[jgreen1238]

2001 150 Im geting air in the system somehow. Its not leaking and the resivore is full but it is definately sucking in air. It has the sound of rocks and ****s around when going up and down. I figured it must have a bad O-ring or gasket inside the unit. So is there a kit that has everything I need or will I have to get it in parts. If so what parts do I need?

[boats.net]

No kits available, probably start with shaft seals and orings.