A proven fact? Then what is this stuff under the silver base on this coppertone 1967 Fastback?
I maybe a newbie to bicycles but I'm not a newbie to highest levels of restoration experience, I take it seriously and I don't suffer fools gladly. The This is getting cruel already. I sure do not understand why people latch on to something when they are so obviously wrong and are embarrassing themselves. It will be amusing to see how you twist this.
tools in the background of that last photo should give you some idea.
Since I had this horribly weathered frame laying around I just could not resist to post it. I fully understand that as a newcomer here, that when I start pushing the know it all's around that have over a thousand comments of apparently suspect content, I'm probably not making any friends. You can be as right as rain but still lose badly in the court of public opinion if the public does not like the cut of you jib. I can live with that.