Rep Power: 243

hey guys wondering if anyone out there can help me out. I put on a set of tein flex coilovers on my 04 ex coupe last summer and been driving them for the past 6-7 months. They have never given me a problem up until recently i noticed that the front left side seems to be raised up. Originally i dropped it eyeballing it but all the tires were just about tucked under the fender with no more then a finger gap. Now 3 of them are the same but the front left is a solid 1.5 inches away and the front of the car looks like its on an angle. When i looked at the perches it seems that it somehow spun up a bit becuase there is deffinately more threads left then when i originally set it. I understand i can fix this quick but readjusting them to be level agian but im a bit worried as to why it would have done that, i tightened the locking perch maybe i didnt tight enough? dont really udnerstand how this could have happened. thanks in advance for your time