I ended up needing 9.5 ounces of weight. I about fell off my chair as I just kept adding more and more weight before the tail finally started to rise off it's rest.

Reminds me of pictures of the gold bars stacked at Fort Knox

After much discussion with some of the guys and my brother they all assured me it would still fly easily with the Saito 91 in it. It just won't be very snappy now. I guess the good thing is I may have taken some of the float out of it during landing

I ended up building a box (two sticks of balsa w/ a ply wood top attached with servo screw and CA'd) and then covered it. Installed the weights in the box, added some adhesive foam to make it tight.

I then mounted the box under the engine by screwing in 3 servo screws to each balsa rail of the box, and then more screws on the end of each rail. I don't think it's going to go anywhere......

I did try a 2oz prop washer, but I can't get it to work with my TruTurn spinner. If I can find something that will work I can then remove lead as needed.

So, what do the rest of ya think, is it going to fly, or become a very fast lead sled??