For seating the beads, leave the core out of the valve stem so you can get more airflow. A clip-on style chuck is handy so you can have both hands free to move the tire and rim around. Lubricate the rim and tire. You can buy actual bead lube, but I just use soapy water in a spray bottle. You can also wrap a ratchet strap around the tire and tighten it to try get the beads closer to the rim. After the tire is seated, let the air out and take the strap off.
The smaller front tires are the worst. Especially when they've been on there for forty years. I use my big bench vise to break the beads. Also try to get some soapy water in there as I go.
The smaller front tires are the worst. Especially when they've been on there for forty years. I use my big bench vise to break the beads. Also try to get some soapy water in there as I go.