Well, JNorton, I just have to hand you a great big compliment

if you can get your LT to roll just by cranking the aileron over. I have tried several times to get that to work and it's a damn lucky thing I still have my LT-40 - and a damn lucky thing I didn't hit anyone on the ground too!
I find when I have tried to barrel roll, if I enter the roll in level flight I get halfway around, the nose drops (i.e. in a right-hand roll the nose falls off to the right which is ground-wards) and down she goes. If on the other hand I enter the roll in a slight climb (as in a "victory roll") the airspeed isn't as high and the full right aileron leads to a lot of right yaw - the plane just veers over and I have never held it in that attitude long enought to find out whether it will roll or just crash.
I also have tried using opposite rudder to counter the yaw during the roll, and maybe keep the nose up as it passes through knife edge, but that was a near-disaster too.
Maybe I'm just a bit ham-fisted

but I figure the type certificate for the LT says "no rolls or deliberate spins allowed"... at least as far as I am concerned.