OK, so I learned a few little yet very important details yesterday.
#1 Found the rack stop adjustment.
#2 Adjusted rack stop in 1/2 turn intervals, two times. No change? hmmm
#3 Found a throttle stop adjustment bolt on linkage. Backed that all the way out for now until I get the fuel dialed in. Then I will move it back in to a new setting.
1 full turn backed out made 5-6psi and really woke the tractor up! I've now backed it out to 1-3/4 turns to see if it continues to gain or if I have plateaued. This is the testing phase so I am seeing what works and has the biggest gain with least stress. I likely won't go past this test setting, but I would like to see if it makes another big gain or if improvement curve has flattened out. For science.