Alan- just can say sorry... and welcome to the club. Had the same problem, cleaned the plastic with a toothbrush and rubbed it down, sanded, washed it again, sprayed, waited two days longer for drying, put a very smooth masking tape on and..... the words I want to use now are not allowed. Wouldn`t kick a cat anyway, but would be some of the lads who will be not biten by the dog, but they bite a dog anyway...
At this problem, get in touch with our well-known specialist STAVROS in this forum.
Any questions about painting? He`s the specialist to deal with.
If you don`t succeed- have a beer. If you succeed, have two.
Regards,
Jörg