Helping a friend set up his guitar. I have done many set ups and repair but mostly on Les Pauls and even some Strats. I never saw a bridge like this one. It's a floating bridge with a thumb screw on the back panel for spring tension. For the life of me, I cannot get the action low enough to be comfortable. It came with 9's and this friend, Liam, wants to go to 10's. It seemed decent with the 9's, but not with the 10's. The adjustment screws (allen heads) are bottomed out. I can raise the the strings by turning them counter clockwise, but cannot lower them by turning them clockwise. I mean they lower but the bolts bottom out. Can anyone point me in the right direction? Thanx.