GMCAMARO when it came time to clean up my cab & fenders I got a quote from a local company. I was told that bleeding through the paint can occur. The shop that was doing this type of acid dipping told me that usually, its best after the dip, to put it into their oven for 8 hrs to make sure everything was completely dry & cooked out. They offer a full guarantee that it would not bleed through. The cost was very high. So I went to media blasting for half the cost. They said the problem is usually caused when some of the acid stays into inner & outer seams or panels that don't drain and dry out as well as just a plain surface would. Hope this helps.