Peavey t-15 style bridge intonation set screws

[writer]

I have a 1982 Peavey T-27 Limited which has a bridge like the T-15. The 2 allen screws that move the saddle assembly back are missing. Not the hieght adjustment, but the saddle intonation adjustment. I have tried to match some up but the threads do not match. Does anyone know the size screws it takes? Not the allen wrench size, but the allen screw size? Thanks so much. Michael