I primed with your chassis primer and painted my sand blasted chassis 2 years ago with top coat of Eastwood #1244Z Chassis Black. Since then have moved 2 times and now want start again. It has stood up very well with all the moves. The chassis needs to be cleaned of a heavy accumulation of garage dust and perhaps a residue of wax or oil since I tried to wipe it down with an old rag, don’t know what to use that will not harm the #1244Z already on the chassis and my new topcoat of #11175Z that I want to use to cover the scuffs here and there, although I would spray it completely to cover the entire chassis. Thanks in advance.