Rebuilding the FI relay board. Options

[Air_Cooled_Nut]

My soldering skills leave something to be desired and the space in which to perform the soldering is rather tight but I was able to do it...I think...at least it looked okay and felt solid. Here's a picture of before my soldering and after it was all coated:
(IMG:http://www.914world.com/bbs2/uploads/post-2-1063733351.jpg)

Mine showed only a couple cracks in the tar bottom and I'm sure I could've easily patched them but I wanted to see if recoating was easy. It is, just messy and I recommend wearing nitrile or latex gloves. The LET shrinks considerably. One container will be more than enough for two coats and left overs for later wiring projects. The 3M undercoating sprayed on easily and did not shrink. Several coats of that would probably be fine. I hesitated using RTV because I thought I read somewhere that it may be slightly acidic on some metals and I didn't want to risk having my copper strips and soldered joints disappearing on me one day while driving.

If anyone else has done this differently I would like to hear about it, be is successful or not. Mine was successful (short term at least (IMG:style_emoticons/default/wink.gif) ) as the car started right up and ran after installation. Will it last for the years to come? We'll certainly find out (IMG:style_emoticons/default/beerchug.gif)

[ThinAir]

Where can one get Silicone Conformal Coating or LET or 3M Rubberized Undercoating? My board seems to have failed this weekend (had to hard wire the fuel pump to the battery to get home from 60 miles away).

Can you just soak the whole board in paint thinner or do you apply some to the underside and gently work at getting it off before applying more thinner and repeating?

Is there a reason to choose one of these materials over others? I'm thinking of how you remove it in the future should another repair become necessary.