I just lightened the airframe and engine (H9 80" Cap/ BME44) by a little more than 1-1/2 lbs combined. Which gives me plenty of room to add smoke, or a canister, or both. Plane/engine combo was all ready very light.
I added smoke. Just because it's cool
Of course the smoke system sits right at the front of the cowl

but it works just great. AND, best of all there are no weight penalties.
Gotta love all this light weight stuff! finally we can do what we really want on an 80" or larger plane. Or, toss the 55 into a 25% aerobat... Yeah, I'm liking this alot!
Scott