Hello. So recently I purchased my first Discus Launch Glider; a dream flight libelle. After much practice I was finally able to launch it high enough in the air to catch thermals. However, I seem to be encountering a problem when I fly. Even though the Libelle is very nice and floaty, I always tend to loose altitude very fast whenever I turn. Now I already know that airplanes naturally loose altitude when they turn, but when I turn with the Libelle, I loose like 7 feet. I think I may be stalling when I turn which leads to the altitude loss but I seem to be loosing way too much. I turn, stall, and fall. I was wondering if anyone has any suggestions for this problem. Could I have the CG to far backward? Do I need to mix in some differential with the ailerons or something? One time, I flew straight into a nice thermal and then fell about ten feet after encountering the sink. I know that it is normal to loose altitude when in sink but my plane just stalled and basically dove down ten feet. BTW. the Libelle is a 3 channel glider (ailerons, elevator, rudder) and I think the reason why I loose altitude so fast is do to pilot error, not the actual glider. The glider is really floaty when flying straight.