I recently bought Alpha Revo 4000. Probably strung about 8-10 times on it. This is for personal use only as between me, my wife and my daughter there is enough to justify having a stringer of my own. I have become reasonably proficient in stringing (from where I started ). I no longer need to watch videos to start stringing, tie finishing knots and tie starting knots. I do 2-piece stringing on all my rackets. The machine was bought new and has never been calibrated. Recently, I found out about racquettune and used it to measure the tension accuracy of my stringing jobs. Needless to say, I am disappointed. Since then I have also found out about inherent tension loss in a CT machine. Here are some situations that I would love to get some help on in fixing / understanding: * Strung Solinco TB 17 @53lbs on a Juice 100 (100 sq in). Immediately after stringing racquettune shows 44lbs. One day later, and playing for 2 hours, racquettune shows 40lbs. Two days later, and playing for 5 hours, it shows 39-40lbs. * Strung Technifibre X-one biphase 17 @ 60lbs on a APD GT. Immediately after stringing racquettune shows 52lbs. One day later, and playing for 3 hours, it shows 48lbs. I used racquettune values from the database for string factors for these strings. Some questions: * Any recommendations on what stringfactor values are appropriate for these strings ? * How accurate is the tension reading on racquettune ? * Is the observed drop in tension on CT expected ? Do I need to compensate by raising the stringing tension ? Can that damage the strings (like going from 53 --> 60 for TB 17) ? * The machine was brand new. So even though I haven't calibrated it, I am thinking that it is not too off. I have ordered a weighing scale to calibrate it, so will be able to do that in ~1 week. * Any stringing advice to reduce drop in tension ? I am somewhat slow in clamping, which could be causing steeper tension drop ? Is there a way to compensate for this ? Not sure if my speed in clamping will go up. * I read that I should pull tension slowly, and did do that. How long should the tension be pulled for ? * I am getting a racket professionally strung, and going to measure it with racquettune to see the difference. That should tell me if this is an accuracy issue with racquettune or my stringing job. Thanks.