(Tan)Eepak stated a few posts down that it was essential to use 4 fly clamps when stringing the mains with a stringing machine that had no fixed clamps. Well, I tried his suggestion on 4 rackets and though I feel it's not essential, it definitely is better and I will use Eepak's suggestion from now on. I don't believe there is a significant tension loss using two clamps instead of four because you "make it up" when you pull the next string but Eepak's 4 fly clamp method is definitely more better, minimal tension loss. The analogy I give is why do something at 90%-92% success when you can do it at 95+% success with minimal extra time spent? Thanks Eepak!