No, it's not too heavy. In fact, on the Twister I use a heavier Dave Brown acorn nut(same page as spinners) most of the time because my C/G was always aft of the plan's spec. It's still tail heavy according to the plans, but I like it that way. I'm still experimenting with that. It's surprising considering the wide nose on that bird, almost 1-1/2" with the recessed engine and tank. Stiff as hell. It didn't phase the fuselage when I dove into the ground. I need some stickier tape for my handle. It hung on the lanyard and turned about 10 loops the size of a beachball and they didn't grow. But when I reached out and put the handle back in my hand, I put it in backwards. I still can't believe I couldn't adapt fast enough, I just went brain dead and pulled it the wrong way... about 5 times. And I had no idea that plane would turn that damned tight Lol. Guess I never pulled full control on either line before.
Whenever I get a little less achy I'll finish the new wing. I'm slowly piddling with it. But after watching Sparky make a whole wing panel in two hours last night, including making the ribs, I'm gonna get'r done. I love that plane and fly it better than any ship I've ever had. It was great of Walter and my forum buddy Fred, to send me a whole new wing kit for it.
Rusty