I’m in the process of repairing the foundation of a 2100 sq ft. house.  The beam will be replaced but my issue is at the sill plate on the exterior wall.  The sill plate is in good condition throughout the majority of the house.  The issue I’m running into is that it is rough sawn and varies as much as 1/4-1/2 inch even in areas.  It looks like originally they notched or shimmed each individual joist.  Is there a creative way to overcome this to avoid having to notch every single new 2x10x16 joist I’m putting in?  I considered building a pier and beam along that exterior wall to where the floor would essentially be floating.  Someone else mentioned placing a 2×6 or 2×8 on it’s end and pulling a string to then cut it straight and use a JBA210 hanger for my joists.  Difficult to wrap my head around that as well seeing as how the front of the house where I’m beginning is 46 ft long.  Thanks in advance for any ideas, opinions, or insight.