Dan, I had a similar problem with the 335 - there was a flaw in the clear coats (10 or so) but not the color underneath. I took it to a friend who paints custom motorcycles (all the flames and stuff) - he said to sand back with 400 wet and dry until the sludge turned pink (indicating that I had just hit the color layer), then hit it with 600 and reshoot the clear. I masked the area around the flaw and tried to feather the clear into the old finish but there was still a significant ridge that had to be feathered (starting with 800) before the final color sanding and buff.
Btw - if you used any wax or anything like that in your polish you know you will have problems with subsequent coats of lacquer.
Here are a couple of pictures of mine - it was a hairline crack in just the clear running from the switch (the highlight is on the crack)
after the repair
