Cooking oil rules!! Seriously, it's awesome and Anssi Vanhala uses it, too. I lubed my really bad megaminx with it but didn't really use it because it was so stiff. Now, around a week ago, it turns really well. That happened also with one 3x3... It somehow breaks the puzzle in and makes it looser. Cooking oil is maybe the biggest reason why I have some UWR's that require just dexterity and a good cube, lol.