Best way to break in new 19.5 tires

Many have you have read my posts on Centramatic balancer thread in regarding my difficulty with the new Dynatrac 245/70r/19.5 16ply load H tires that arrived on the new 19.5 Visions back in June. Could never get them balanced right the first 5000 miles. Horrible vibrations. 3 commercial truck tire shops deemed them defective in writing even having the equal balancing media removed. Due to ATD( American tire distributors) incompetent defect warranty procedures in regards of having to send tires back first and waiting 4 to 6 weeks for them deem tires defective. I decided to buy 4 new American made tires and deal with ATD after. Firestone 245/70r/19.5 14 ply load G.

So here is my questions.. What is the best way to break in tires. Load TC right away, which I did last time with Chinese Dynatracs or drive truck for awhile unloaded? Also after having new tires mounted and balanced today three gentlemen at Wylie tire shop after I asked them to inflate rear tires to 100 psi and 80 psi in front tires politely suggested that I do not need to run that much in the rears. Told them I carry a heavy TC which most of the weight is on the rear axle but they still were adamant about not needing to that much. one shop owner stated he has hauled many heavy fifths and heavy equipment gooseneck trailers and never max psi his stock tires. I ran 80 in fronts and 100 psi with dyna tracs 245 16 ply load H.