Hi mate, its not letting me send what i want to send in PM so ill reply here. Im going to be flat out for next few weeks and i cant guarantee a date or even when ill have the time as my jobs are piling up, at the minute.
The body shop that said it was "impossible" to be painted without disassembly must be be rubbish, my end result/finish on this was great it was like glass after a flat&buff. Go elsewhere and find a proper painter. I painted this one a few weeks ago from nitrious blue to frozen white. As you can see i wrapped the centre only (even wrapped it in some old xmas wrap as i ran out of the brown stuff)and loosen the bolts underneeth to get enough paint under the two parts coming down. I really made sure i base coated under them at the start too. I covered the hard to reach area's first then painted like normal. The painting part is easy, the masking is the hard part. Its time consuming to get it right with the perfect gap so you get in the grooves and dont cause an edge.
Job turned out mint, had to use a tiny plastic pry tool to scatch the tiniest amount of overspray off the part where the black peice connects to the sides of the spoiler from the inside, i did this deliberately though as i just wanted to make sure i got deep in those grooves. Obviously if you slot the masking tape into those grooves no paint will get in and you will have an edge... An edge will possibly cause paint to come off under a jet wash etc... Its no good so i did a proper job, cleaned up after. Then the job was perfect.
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