I have re-checked my shift settings. The ball and spring are still there. The grub screw is tightened all the way in. The adjustment screw was set for 6.5 turns out, which is 2.5 turns more , out, than the factory setting for a NT-16 motor. Seeing how I am using a much more powerful OS .18 motor, I probably should be adjusting the screw for a few turns less, or more tightened, to handle the OS motor. I have re-adjusted the adjustment screw/ball/spring to 2.5 turns from totally screwed in. Before, my CEN MT2 seemed like it was running in 2nd gear from the start. Giving full throttle the truck starts slow, but accelerates quickly then running rather fast on a full straight away. If I give it full throttle, after reaching a certain speed, the engine will totally bog down with fuel, so it seems, and will automatically seem to run only at an idle's pace until I slow down again. I am sure that is a different issue with the HSN setting. I was running the truck rather rich the other day, when it was very hot and dry in California last Sunday. Can anyone verify if I am making adjustments correctly? Since the factory NT16 motor is set for 4 turns out. I should lessen the number of turns out for a more powerful motor. Less turns will make the transmission shift sooner, is this correct? So more turns out, will make the transmission shift much later. Which is why the truck was probably already starting up in 2nd gear when it was set for 6.5 turns out. Tonight I made the changes so I will not be able to test my adjustments until tomorrow mid-day. The neighbors really go crazy if I run my trucks before 11am. Go Figure [&:]. thanks to all who reply back. any info is most appreciated.