Thanks chaz,
moose,
I don't scuff the lexan, I used to but then everyone I knew that did shells too never said they did it and they didn't have any problems....so I stopped doing it, and I've never really had any problems. Obviously if you hit something hard enough, the paint will come off regardless of wether you scuffed it or not. For faskolor I use a pressure around 40 to as high as 100psi for some colours it depends on what needle you use. I do thin some colours I use the clear windolene to thin it. for solvent paints i use around 35psi and thin with cellulose thinners.
Here's my 'Jimmy' Replica. not the best of photo's....Neo its on its way...
...and another 501X shell....