1989 Dodge Dakota bleeding problems

I changed my master cylinder on my 89 Dakota.I bench bled the master cylinder. When bleeding the rest of the system, the caliper bleeders were seized.I changed out both calipers for new ones and changed the pads as well. The rear shoes have plenty of fluid while bleeding. The fronts will not accept any fluid I mity-vac bled the fronts along with the old fasioned way. No luck.I am about fed up with this truck.I have bled brakes my whole life. What obvious thing am I overlooking?
. BILL