At the end of summer last year my D-160 started weeping fuel like a SR-22 Black Bird sitting on the tarmac waiting for take off. Today I decided to pull the tank & see what was going on. After a good wire brushing things did not look good.
Figured that I would try silver soldering the holes & low spots up. Took some time, don't look real pretty but at this point I believed that I had it sealed up.
Here is a trick to check your work if you do some thing like this. Make a paste out of water & baking soda. Brush it over your work and allow it to dry. Once it is dry put some gas in the tank and allow it to sit. If you have a leak the past will show exactly where it is. It will turn yellowish where ever the gas seeps through..
My paste stayed nice & white except for 2 little spots that were stained by left over flux. These spots did not grow when I put gas in the tank so it should be ready to install again.
Just wanted to share this leak detecting trick with you all.