there should be a "slight" drag on all wheels, if the shoes are new and the drums have never been turned, likely the shoes could use arcing to fit, but they'll wear in soon enough .... the pulling could also relate to the rears, if that left one drags more than the right .... make sure you haven't got a cylinder leaking or oily fingerprints on any shoes, and if you haven't replaced the rubber lines at the front wheels, do so
Bill
