What exactly does each of these things Simichrome Micro Gloss liquid abrassive Renaissance Wax Pre-Lim I want to polish some caps and barrels and don't know what exactly to buy... Also, I already have Micro Mesh and a jewelers rouge, so I do get to a certain point, but there are still hairline scratches. What else would you recommend? Also, out of curiosity, what about car polishes/scratch removers, are those okay, or too abrasive? Thanks for reading!