Ludwig 14"x5,5" Supralite

This is my only snare drum the last one and a half years. The sound is excellent, but a huge problem for me is that it gets detuned very easily. I play with rimshots almost exclusively and there are times that i had to tune between every song. Even the screws on the bottom part. Huge bummer. Now i'm stuck tuning it very high since it's the only way to keep the tension for a bit more time. The small plastic pieces that you put on the screws to keep it from detuning, helped a bunch, but they didn't solve the problem.