Sorry, what are substrate issues?

I spoke to the owner tonight and asked if it had been repainted.
He said not in the six years he's had it and, as far as he knows
(but he's not positive) not by the original owner.

He did say he and his wife both had 560SEL's. His was white and
had a similar problem, his son has that car now. This one was his
wife's.

I'm going to get a bodyshop recommendation from the German
Auto House in Austin tomorrow and take it to them before paying
for a PPI on the car.

Thanks,

Bill