I bought my 910 D2 9.5 a few weeks ago with the RIP 60. During fitting we took the shaft out several time and switched shafts. I see on the Titleist website that it looks like there are washers between the screw, club and club shaft. That is what the pictures show. When we were switching shafts I never saw a washer. Is it permanent or does it come out? Also, does the bottom shaft screw ever fall out when loosened?