Thanks guys. My loco looks just like the photo posted by Mellow Hudson Mike. What I found is that I need something on both sides of the boiler. I looked for small transparent tubing similar to that on the right side but have not found anything so small. I did not realize there was something called liquid tape. Yesterday evening I found clear liquid insulation on Amazon and ordered a small bottle.
I agree with the comments re: the loco itself. A truly great reproduction of the original. TMCC is awesome complete with quilling whistle. Love it.