Mercury peeing problem

[Mikeyman104]

I recently picked up a new to me boat, a 2001 Starcraft 196 Superfisherman with a 2004 150 Mercury Optimax on it. When the guy was showing me the boat, he hooked up some muffs and I noticed how it took a while for it to start peeing but eventually it started to flow ok. Fast forward to my first outing with the boat and pretty much same thing was going on. Starts with a trickle but then gets going ok. 

 

I chalked it up to needing a new water pump, so I tossed a new one on tonight and then put the muffs on it. Nothing comes out. Makes me super nervous running it without any water coming out of the tell tale so I shut her off and pulled the lower unit back off. Guessing I did something wrong with the install cause one of the gaskets got chewed up so I tossed the old one back on. Hooked the muffs up again but she still wasn't spitting. Maybe a piece of gasket clogged everything up? I pulled the tell tale tube off and blew through it and it seemed fine. Anyway to clean out the system? 

[Shakemsam]

I would guess it's in the install of the new pump. Any chance you have the blades curled the wrong way?