Hi Britt, sorry for digging up ! I've checked the links you guys posted above and I found the shafts chart. But I'd like to understand better the letter and number system. Do you have something ? For...
View QuestionHi Britt, sorry for digging up ! I've checked the links you guys posted above and I found the shafts chart. But I'd like to understand better the letter and number system. Do you have something ? For...
View Question