Fuel tank just dipped in caustic soda, Is a neutralizing agent necessary? Options

[rjames]

Picked up my gas tank today from a local radiator shop. It was treated with caustic soda only for mild surface rust. The tank looks great, but when I got it home I noticed that the inside of the tank is a bit 'sticky'. I called the shop to see if any neutralizing agents were used after the soda bath and was told no, and that it wasn't necessary. "Just fill the tank up and go". Not sure if I'm buying this. I know nothing about caustic soda baths (I only take showers (IMG:style_emoticons/default/chairfall.gif) ), but don't want anything I just want to make sure that there's nothing but gas going through the fuel system.

There is some slight surface rust returning on the outside of the tank so I plan to treat the outside with metal ready and then Por15. It will be a few days before I'm able to get the tank in the car and full of gas and there is already some VERY mild surface rust forming in the tank from sitting in the radiator shop overnight. Should I swish some metal ready around in the tank to convert what little rust there is and to protect from more rust forming until I can get it installed?
Do I need to neutralize the caustic soda stuff that it was dipped in? Do I need to stop asking so many questions? (IMG:style_emoticons/default/confused24.gif)