Well do the TBS first & don't forget the Restrictors with your New Tool.
When I do my TBS, I use about 4K RPM to Balance, seems I am more there in this range than 1000 RPM!
Also, after your done, set the Idle (Warmed Up) to about 1100-1200 RPM... this and the TBS may be the "hesitancy" you are...