OK, I made the cheddar yesterday, and just now took it out of the press. I took your suggestion and decreased the initial pressing weights. I also did something else that was quite different. I opted for the stirred curd recipe again, but I also wanted to at least simulate the cheddaring process. So, after the cook, and the stirring period, I drained most of the whey and then pressed under whey - 15 lbs for 25 minutes. I then removed the curd mass to a cutting board and cut into 1” cubes. This was salted and firmly pressed into my 8” mold. The initial press was at .4 psi (20 lbs actual weight), for 30 minutes. Then .8 psi for an hour. Then 1.6 psi for 2 hours, and finally 2.0 psi for 18 hours. When it came out of the press the wheel was not hard as it usually is. Instead it was nicely knit with very few small mechanical holes, but a slight sponginess that gives me hope that this may have gotten me on the right track. I’ll find out in a couple of months.