Hi PILOTDAVE. I have a GP Pitts with a Moki 2.10 and it has absolutely no bad tendencies. Your Pitts will do fine with the 1.60 but probably wont have alot of vertical performance. Just make sure on takeoff you advance the throttle slowly in order to let the tailwheel rise off the ground. Once the tailwheel rises you should then add full throttle, again, slowly. Make sure you never try to yank the plane off the runway. When you think the plane has attained take off speed, gradually add up elevator and it will climb nicely. You'll also need quite a bit of right rudder to counteract torque.

When it comes time to land, just make sure you don't get it too slow.

Good luck...you'll be fine, just take it slow.

Spence