Why do you suppose when I install my wiper arms on the drive spindles,seat them all the way down so the holder clip will seat in the slot.The blades are 11/2” off the windshield???? I even tried another set of arms SAME!!!! The arms are all ‘71 and one set is NOS. Sure do not want to bend or alter anything till I get some thoughts. Any one else had this problem on a ‘71 RR?