Fixed this one today. I do enjoy the warmer weather, and they were kind enough to let us eat have lunch and a drink inside when our work truck wouldn't start.
To keep the transformers out of the water, I bent this metal shield. I also put transformers on the R and the B- os they have their own transformers instead of sharing one- a little more robust. I did leave the other letters alone (except for the A and R on the more paint chipped side, I remade those). The electrodes on the "A" cant be any further apart. I really should note that on my pattern. When your working with a tracing of a tracing, its tricky. I gotta digitize these patterns.
We actually have 2, 60ma transformers powering the 4/6 letters. I put in two, 30ma transformers. The lower current is less bright, but human eyes are really bad at seeing brightness. I bet you cannot tell which R and B are dimmer than the others ;)