And in my case it also depends on my playing times, i mean that if i don't play with the racket much then i won't regluing much, and at most i won't care either, it is the second Long 5X blade so i will use it only for games instead of everything, and using my first Long 5X for practice and balls training only, and later i am also planning to buy DHS Long 5 version of National which is "W986", and that will have also another rubbers could be H3 one of them, means i won't use all of them to exhausted, and even if one does most likely i will just buy another rather than re-boosting and re-gluing, but i will keep that option open, and i think for National 39deg BS rubber maybe i will go with 2 layers only, it is 2.1mm instead of 2.15mm which i don't know if it has that big factor anyway, i won't touch top sheet.