Well, just to rule out the sealing O rings as the culprit. i went to Home Depot and bought new rings that were thicker. I put on the silicone lube and let er rip. It was a lot easier to prime this time...probably becuase I had the input connector inplace. Everything worked great but a small leak which I am concluding is the gasket....which is on order. My local store didnt have a gasket that big.
I don' believe I damaged the connector or the latch because the connector was completly inside the other tube. I would guess this was the reason it was not priming, though. Wow, lots of trial and error. The last owner finally found the directions and is sending them to me, lol! i could of used those the day i tried to blindly put this thing together. i have faith that my slow leak is the gasket and after $20, new sealing rings, your great advice on setup...it will be running again. I will let everyone knows how it goes!
Since you have so much experience with canister filters, I have one more fearful question. Have you ever came home to find all your tanks water drained onto your floor??? Because of the problems I'm having, it's making me weary that it will fail when I am not home, killing my expensive fish and ruining my house.