Hay guys. This is fun. All the stuff I read is right on. The origanal frame is still the best to work from if it is straight. I used a digitel level, RV screw jacks, turn buckels and short chains bolted to the floor to hold everthing in place. My first frame was built on a double 2x6 wood base. I'm still looking for that missing half inch. Even so, it worked out, but steel is best.