DON'T SELL THE DRIFTER!!!!!!!!!!! I have several of them, including one that Jim built for me in 1984 and another he built for me in 1987, like yours. They are great bows and perform very well compared to many bows today. You can get a little better performance with some of today's bows, but not a huge amount. Obviously, you have not had a problem with the Drifter. If you do decide to get another bow, keep the Drifter. You will only get a few hundred dollars for it, if it is in good condition, and you could never replace that bow that was built for you by one of the legends in the business. I have a couple dozen Brackenburys, including many of the older ones like your Drifter. I love them! I also have 7 Quests, 2 Non-Typicals, and a Peerless which are the models of Brackenbury bows that Bill Howland has designed and built since he purchased the business years ago. They are among the finest bows being made today, and there are no better bows being made by anyone in my opinion.
I do encourage you to try other bows and to buy another one if you like it and can afford it, but not if it means that you sell that wonderful Drifter that was made by the hands of my friend Jim. You have a treasure that you should never part with. I can tell you that I will never part with the 2 Drifters Jim built for me!!!
Allan