I did not take it as an insult and I dont want to get into a bitchfest as you dont either. But I'm just relaying my personal opinions also, but like I said I have been doing this kind of work for almost 20yrs and not in a production type atmosphere. People pay for the highest quality in my shop and I would not jepordize the quality of my work. When a car goes out of my shop my name is all over it, and I wouldnt use sub par products on a rest that could cost $100,000. If you do the repair or install the quater correctly and weld the factory seam completely across, the same where it attaches by the rear window and trunk area it should never crack. I have yet to see this happen, after countless quater panel replacements on not just mustangs but all types of cars.Like I said before it is a personal choice and I am not knocking yours. I just said it was not necessary to body solder to do it correctly. He did say lead didnt he? I'm just bustin your nuts man. But I do respect your opinion.