Is it bad on the transmission clutches to downshift with a locked converter at part throttle or should it unlock, downshift and then relock in the next lower gear? I'm working on the trans tune in my truck (turbo 5.3, 5000lb, 3000 or so triple disc, 6l80e) and I'm trying to figure out what's best for the trans yet comfortable to drive. When trying to pass someone on the highway, I'd like for it to downshift to the next gear for the extra torque yet I don't want to have to unlock the converter and have it flare up to 3000 rpm. What's the common method here guys?