My 26 T is a bone stock body full fendered tall T coupe with a 327 Chevy automatic and 8 inch rear axle on coil overs. I am attempting to install stock 32 Ford commercial headlights to the stock headlight bar. The bar is flat where the stock headlights were mounted. The new lights pivot up/ down on a hollow stud with the wiring thru the stud. My problem is I can't get the lights to pivot once snugged up. The bell shaped mounts on the headlights allow the stud to pivot until almost tight, then they're aiming up once fully tightened? My Model A had a dished mounting surface on the bar and would allow adjustment as you tightened them up. Does someone make a T bar with a dished type headlight mounting surface? What am I missing?