That kind of lends credence to my entirely unscientific theory as to why Rickenbacker has had problems with clearcoat adhering to the color coats below. They use a UV activated paint for both color and clearcoat, but it's almost entirely the opaque colors they are having trouble with. My theory was that the color coat isn't fully curing under UV light, but the clearcoat does, so you have a hard finish over a slightly soft and not fully cured colorcoat, so under screwed-down parts like the bridge and other hardware, the colorcoat separates from the clearcoat. Do they have anything like a list of finish materials you can overcoat with Solarez? I've been using water based Varathane Ultimate, but finding it doesn't dry as hard and scratch resistant as I'd hoped.
There may be a list, I have not seen it and have not tried the SolarEZ over anything just as a grain fill / bass coat. It’s definitely great for that although the end grain took noticeably longer to cure then the rest. Presumably because it soaked up more.
Varathane and Createx paint seem to work fine over SolarEZ, if that helps anyone out.