I recently upgraded the engine on my Lanier Stinger 120 from a Zenoah G38 to a Brillelli 46 GT. The differemce is like night and day. Most things are much better, but I now have a problem when I fly straight up. The plane will climb until I can't see it, but it tends to roll counter clockwise. Is this a torque roll? Is the proper correction to hold right aileron?

I am sorry for posting such a basic question, but I never had a plane with an engine powerful enough to do anything resembling 3D.

Thanks,
Bill