For torque rolling, a larger prop will get her spinning much faster. I have a 28% Precision Aerobatics Edge with a DA50 and it's hard to get it to wind up with a 22x8 NX (awesome prop, otherwise). With a 23x8 NX it would start torquen around much easier. With a 23x8 PT carbon prop, it couldn't stop it from rolling without full opposite aileron. You can also help induce a torque roll by bumping the throttle down and letting it tail slide a bit.

As for wing rock in harriers - if it won't lock in on its own, you 'fly' a lot of it out with lots of little corrections once you get comfortable with the airplane and how it reacts. I've found a little constant cross control on the ailerons and rudder will help.