Heat treating reflex would probably bring up the weight maybe a couple pounds. Adding some recurve too maybe? If that would be possible with horn nocks already on? I've piked bows with horn nocks glued on, and drilled out the wood out of the nocks with a knife, and just glued em back on. I don't do the nocks until I have the bow almost completed. I mean burnished and everything, everything except the finish. I use self nocks to tiller and sometimes shoot in the bow before that. When it is time to do the nocks, I use a tooth pick and a pencil, and mark with the pencil how deep each horn nock is. Than, I line up the self nocks and the horn nocks side by side, and mark where the horn nocks will begin when glued on the bow. After that, I take the tooth pick that I previously measured and marked the depth on, line it up with the mark of where the horn nocks will begin on the bow, and mark how deep the bow tips will go into the nocks using the tooth pick. So now I will know where to cut, and also where not to go past when shaping the bow tips.