I recently bought the How To Use the PC DVD and found it very informative. However I have a question regarding the difference between the hand rubbing and machine polishing applications used in the dvd. If using #9 instead of #80 would that make a difference in when to apply the #7 and NXT. Also if NXT is already on the car can I put #7 on top of it and then follow #7 with another layer of NXT?
Thanks...Mel
Thanks...Mel
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