re: Can you get good straight, equal length lumber anymore...anywheres?

8’ stock is typically 96 1/4. Unless you’re getting a specified (inches) length, then 8’ lumber is going to be stock from their supplier, they don’t have some kid on minimum wage in the back that can’t read a tape measure.

That said, even trim saws are going to produce pieces that don’t always cut to exact specs. The reason being often times there isn’t an inside saw blade against the “fence.” A board can move slightly enough to throw it off an 1/8”. Obviously each piece produced between 2 blades will be exact spec. I worked at a reman facility for a few years. There’s a widely accepted +/- 1/8” tolerance in that industry. That said, if someone asked for 96” boards then we were taking that out of 16’ lumber and cutting it to 96”