I have been working slowly, waiting for the engine, but have been watching everything, down to the tie wraps for the tank and reciever install. everytime I do some something to it I calculate and recalulate and tend to be in the 16.5 to 16.75 lbs range. The only thing is, that is considering I will lose 10-12 oz switching to CF gear, wing tube and tail tube. I know what the ZDZ 50 with ignition, muffer and standoffs weight and I went with one servo per wing panel and rudder. I have done some of the lightening mods and may do more once the engine is mounted for balancing purposes. If all holds true, I should be sub-17. That is still 1 lbs more than I would have hoped, but still not all bad. Especially after I emailed my buddy who has the TOC Yak and said his should be slightly less than 19 lbs. He thinks it will float fine, which it will, but true 3D will not be as crisp. The only true way to know will be once it is finally assembled. []