1995 Mercury Villager hesitates when warm

Baffled… My 1995 Villager has never given me major problems. I just had the Tie rods and AC replaced and with that I changed the plugs/wires, fuel filter, air filter, distributor/rotor. I even cleaned My Mass Air Flow sensor. It was running great then it started missing or skipping. The van runs great when it’s cold but after it warms up it starts hesitating when you accelerate. I can punch the gas and it will speed up with no noticeable hesitation but when I’m back a cursing speed and press on the accelerator I feel the bucking and hesitation. Any thoughts? Thanks Joe