The bearing in the pic of the drive shaft is way too close to the u-joint, I bet it is new as I don't think it has ever been installed in it's proper place. Like Bondo said, need a picture of the transom housing.
My new to me 220 1995 searay is about 2 ft longer than my previous 210 CC scorpion, BUT it weighs at least 800lbs more. Both were powered by 5.7s..The scorpion was much more agile but the searay rides nice in a chop like an old Cadillac....
The bolt you removed probably locks something into place. I would wait for one of our experts to post before you touch anything else. Hopefully you can just put it back in.
I glued the pipe nipple in and will put the ball valve on tomorrow. If you guys hear of someone stranded on Sand Island in the middle of the Tennessee river BRING BEER...
My thoughts are with Nola Mike. I just think water in the tank settled under one of the pickup tubes but not the other. or one tube may be deeper in the tank.