Rick You really should be tightening the nuts with a torque wrench. I may have misread, but I get the impression your not using one. I don't recall the amount of torque(someone chime in), but if by chance you over tightened, you can stretch the threads and replacing the line is the only fix I'm aware of. BTW, you will need a crows foot open end to get to them. Again, I don't recall the size. My book is not available or I would look it up for you.