From what I understand, the blistering is a result of moisture entering and seeping through the back of the panel and the moisture then pushing out under the paint. In hot weather, the moisture would reduce and hence bubbles subside.I wonder what impact PPF has on blistering panels? Could it conceal it, for example?
Manufacturers will also see variances in paint, I doubt just replacing a panel with one oem painted is gonna match any better than a professional’s expertise at matching and blending.Ask the dealer to get a new painted door shipped from Hethel to swap it over. I have no idea how a paint shop can effectively colour match complex metallic colours like Nimbus without access to the paint formula.
Once a panel blisters it is deemed to be defective and needs to be replaced (not repaired / repainted) as the blisters will come back again.