Ben, I cannot comment on your paint because I do not know whether it was acrylic or base coat. My paint is acrylic and has not changed at all in over a year.
There are 2 Pagodas here in Winnipeg, Manitoba:
1. Mine - 1965 230SL - papyrus white, acquamarine leather interior, black hardtop and softtop. I have owned it a year having purchased it from the estate of my neighbour. He purchased it new and I have known this car for 25 years. It has original paint, never winter driven, no rust. It had not been on the road for the past 9 years.
2. 280SL - silver with burgundy interior, black soft top. I have only seen it on the road twice. The fellow lives in my part of town. I have yet to meet him though.
If you need paint it is available at Rondex here in Winnipeg. I paid $9.00Cdn for a small bottle complete with cap with a built-in brush. They will also mix aerosoal cans for you.
Next time in Winnipeg send me an Email - profile@mts.net. We could visit.
George