We just put in a WellSaver 20gal pressure tank and have very little water flow from the faucets. Flow does increase somewhat after the pump kicks on but not much. Had pretty good flow before new installation. What should we check for or set the out and in.

Have you checked your areators at the faucets? When you change out a tank, it is easy to dislodge a lot of mineral deposits. These clog up areators.

Also, at what pressures does your pump cut on/off?