While im driving ,i find myself constantly changing the levels on my tts(30/80/120) for various operations... does those actions hurt the tranny or engine?

no,
i've fipped mine hundreds of time while driving with no ill-effects.

JMO but a bunch of flipping between the levels confuses the allisons adaptive learning a bit but thats about it. Set it to one level and forget it IMO though. I have run in the 80HP tune and plowed snow with bald tires and found the TTS tune to be very controlable. It also runs nice and cool EGT's. TTS's tunes dont seem to flake out the allisons adapitve learning as much as some others by bouncing around levels though though. I do switch the truck from Extreme to 80 once i hit the highway and start cruising. Short of wearing out the switch or a bit of allison confusing I dont see any ill effects, I'd ask Steve though for the experts answer.

I woundnt switch under throttle also but thats just me....