Engine goes right to full throttle/advance

I got good news and I got bad news. Found the problem. one of the primary throttle blades screws were broken it looked like it was closing but must of been hanging up. The heads of the screws were there yesterday but are now gone. took off the carb and can't find them. Is my only option to take off the intake and maybe the heads? I think I know the answer. Do any of you have magic powers?