Paul, maybe you still need to back off the adjustment on the Interceptor a little. You shouldn't get any slamming of gears on shifts..
On the shifting on hilly terrain, are you talking paved or off road?
I notice no problems on either. I also don't have the hunting for gears problem.. Actually, just yesterday I was up in the mountains scoping "Jeep Trails" and never had it looking for a gear it would downshift to a good gear then stay put unless I gave it more input with out bogging. I never once had to put it into 4-low as TOD handled everything very well.