I've been running the current Loop for 2 years now it's time to change out the Mayhem pastel. Curious to see what kind of build up there is and if it will affect temperatures I'll do it before and after test to see the difference. Couple of questions, what size are the screws for ekwb 1070 waterblock to remove and clean fins and can I reuse a thermal pads as long as they're in good condition ? I'm going back with Mayhem pastel and plan to flush the system with distilled water. Once I have the system clean can I polish the nickel plating with an automotive metal polish that's non-abrasive ?