A popular detailer on YouTube, Scott HD, has done an upgrade of the Bauer long throw polisher from Harbor Freight. He basically swaps out the grease with a lithium grease, and then changes out the backing plate with a more useable 5-inch backing plate made by Rupes. He has done some tests that show that the upgrade results in less vibration. These changes makes for a nice upgrade for the budget Bauer Long Throw Polisher from Harbor Freight.