I thought I had my Tiger 2 balanced and went out today to fly it for the first time. When I checked it at home the CG point was fine according to the instructions (or so I thought). When I placed the plane on the ground the tail cluncked! That didn't happen on my pool table at home! Seems I check the CG point right side up instead of upside down. Anyway when I tried to add weight, I didn't have enough. Adding 6 oz still didn't balance the plane front to aft. I have plenty of room to move the engine further out on the motor mount but I'm looking for some direction. Has anyone encountered this with the ARF version of the Tiger 2 and if so how much weight was added?