A few questions about my new '69

[GeneralDisorder]

I got a new sending unit/pickup for the tank ($30), blew out the line from the tank to the pump, and installed a second filter between the tank and the pump. So now I have a fuel gauge (yahoo), and I shouldn't be having anymore fuel pressure problems.

I think I'll treat the tank with the POR-15 fuel tank sealer. It's like $75 for the kit and if it works I can then use it on the saddle tanks I'm thinking. Anyone have experience with this stuff? Seems like a good idea as it will basically turn the inside of the tank into a rubberized surface impervious to fuel and water. Even boiling it out or replaceing it with a new one won't gaurantee it doesn't come back someday but the POR-15 ought to make it better than new right?

It runs rough - down a bit on power, and I'm getting some blue smoke. I'm thinking valve job. Maybe all that fuel from the rich running burned some valves? What do you think?

Rick