TraciAG
Veteran
How do you know your improvement wasn't purely down to the practice?
Mentality also affects some people. If someone really hates their cube, or just feels like they know they could do better, buying a new cube could help.
I'm not saying this is the case for everyone at all, but having a change of setting helps some people. But I don't think that's OPs problem. He should probably practice F2L and look ahead at this point until he's down to sub-40, then learn PLL.