I had been working from 62-71 for most of my prep this time and had done 29-38 previously. I meant to order 52-61 to use for some drill so I could work on my weaker sections. But I found that I accidentally ordered another volume of 62-71. Would it be better for me to actually use that and retake some sections of PTs I had done, as my original copy is heavily annotated, or to return it and get the volume I meant to have?