Limited time access to the new (beta) version of the USRSA Customizer tool. Here’s the link: http://www.racquettech.com/beta/racquet_customizer_test.html There are three tools (scroll down the page if you can’t see them), each designed for a different purpose, situation, or mind set: 1. Tool #1 is the main tool. All you do is tell the tool what the specs of your current racquet are and what you want them to be, and it tells you exactly where and how much weight to put on the racquet to achieve those results (if your request is physically possible). If it is physically impossible for your current racquet to achieve your weight, balance and swingweight desires, the tool defaults to first achieving your weight and swingweight goals, and if that is not possible, your weight and balance goals. In other words, it gets you as close as physically possible to what you want. 2. Tool #2 recognizes that you may not always know all the specs of your racquet (usually swingweight) to begin with or you may be on court with a roll of lead tape and you just want to know what would happen if you put X amount at Y location so you can do some intelligent playtesting. Tool #2 tells you the change in specs that occur by adding a specific amount of weight at any location along the racquet. You can print out the results to use as an on-court guide for your experimenting. 3. Tool #3 is indeed strictly a “What would happen if…?” tool. It is trial and error, but some people love doing “what-if” scenarios. It allows you to specify up to 3 weights and 3 locations for lead tape and tells you the resulting specs. It may also be helpful if tool #1 didn’t quite qive what you were looking for, and you want to try to tweak its results to achieve a compromise solution (though this is done better with tool #1 by telling it what compromise you want, and it will figure it out for you). Have at it for a few days, thanks for any feedback.