Will be buying a DA in the next couple of weeks. Does anyone have any tips for a first timer? I've been reading here, Detailing World and watching vids on YouTube. Must admit I'm wavering slightly. Was going to go for Lime Prime followed by AG HD wax. However, on Detailing World have seen an old thread where a guy with the same coloured car (A4 - Dolphin Grey) has gone for Megs #80 Speed Glaze and the results look stunning. And finally... is it OK if I clay in advance, say a few days before, as long as I do a thorough wash before starting with the DA? Thanks for any hints.