Chiseling away at the block. I've been looking hard for small issues to correct before I get on the road. I found one Monday morning. I left the gas on when I brought it back in the house after a quick spin on Sunday. Woke up to a big old puddle of gasoline and the smell that goes with it Monday morning. I probably wouldn't even have noticed it if my bike was kept on concrete, in a garage, but with my shop literally right outside the master suite, I noticed. More importantly my wife noticed.
So, I pulled my carbs to check the float height and have a look. Float height was right on, but found that my overflow tube was cracked nearly all of the way up. I did some test to make sure that was the issue.
1) Submerged the floats in gasoline. Didn't see any bubbles, so no leaks or cracks there. Also, shook both of them around listening carefully for any liquid moving around inside. They checked out good.
2) Inspected the float bowl that was leaking and found a very very small crack running up the overflow tube. I filled the bowl with gas and held it up where I could see it. Sure enough, it started leaking out of the overflow drain.
I didn't think too long about how to fix it. I cleaned both bowls with denatured alcohol and then mixed up some JB Weld. I brushed a very thin coat over the exterior's of both overflow tubes. If I wouldn't have rushed it, and thought about it a little more, I probably would have found a better way to do it. Like maybe solder or something. I'll assemble them tonight and check for any more leakage.