Hi Carl,
No offense taken at all. Yes, I'm familiar with sheet metal aircraft structures, "smoking rivets" and ugly aluminum 'paste'. I worked in the aircraft industry for 7 years, and have even built one kit airplane (although it was tube and fabric and has no bearing here).
Today I went to airport to look at another 150 and now recall the 'crease' was behind and above the landing gear leg (not in front). The more I think about it, the more I think it is not a big deal or deal breaker. I may try to get another look at it and either take some pics or make a sketch.
In the meantime I will study the 150 Club archives.
Thanks again!
Charlie Rowlett