i have a question.........my mom has agreed to drive me to the post office tomorrow and check if they got some shipping tubes i was wondering would those work for like a body tube but my question is where woudl i find centering rings or should i measure and check PML if they got any and about nose cones how do i pick out one to fit that (do i measure the diameter at the top and then how do i know which one to pick) Well post what you have to say!