I wanted to post a follow up. I was receiving all the channels I wanted except one(real channel 45). I didn’t change anything and did a double rescan
http://www.dtv.gov/rescan.html. And I now get the channel.
I left the preamp and distribution amp in place and I’m not getting any distortion. Between the run from the roof to the basement and then back out to all the TV’s there is at least 200 feet of coax.
Now instead of having 500 channels and nothing on I have 16 channels and nothing on. I’m very pleased I will be saving over $100.00 a month.