I was about to post that I don't believe I will use the RatFink head anywhere, but I went out to the bike and tested one more spot that didn't look right, but then I held it just behind the tank, still no good. Then I slid it back to the seattube and it physically nestled right in. So, I rolled the bike out to the courtyard with a light and took some mockup pics. Worth looking at further in the morning daylight.