NO adjustments.You have the 41TE transmission.Totally electronic.The TCM tells the solenoid pack when to apply fluid pressure to what gear position,and based on input/output trans sensors,and throttle position,shifts are made.Now,this transmission was the worlds first fully electronic,and adaptable transmission (it came out way back in 1989).What that means,is,its "smart".It learns how the driver acts,wether he's a slowpoke,or a speed demon,and adjusts shifts accordingly.Seemingly you have demonstrated that you prefer fast acceleration,and normally travel highway/interstate speeds.
Now,saying all that,I find that these transmissions arent all that "smart".You could only once in a while demand rapid acceleration,and it will think thats how you drive all the time.Hence the dragged out upshifts.If the RPMs seem to be a bit high,lift your foot a bit off the throttle and it will upshift sooner.Also,check your fluid level.