I use the stick on lead weights when needed to get cg right
This is a 6 oz set , each of the 24 segments is about 7 grams
http://www.horizonhobby.com/products...t-6-oz-HAN3626
One other thing i did is i went with the TM1100 instead of the TM1000 on my 450
its 1/3 the weight and less than 1/2 as long
TM1100 Weight: 5.4g Dimensions (WxLxH): 25.8x20x10.8mm
TM1000 Weight: 15.8g Dimensions (WxLxH): 30.0x43.0x13.0mm