I have a couple questions about dick nite's s81 mcu.  I have been playing around with different clear coats.  I am trying to find something that will work on soft plastic, the tail section of a BBZ-1 jr specifically.  Nothing I have tried adheres well to the plastic, nor does it retain the flexibility.  I saw on another forum that s81 works for this, but the price has kept me from getting any.   So, I am wondering how far the 2 oz bottle will go?    Do you spray it on through your airbrush,