Today I went to drive my GTP and realized it was shifting weird out of 2nd gear. Instead of shifting like, normal, it stayed around 3000-4000 rpms and didn't shift until i completely let off the gas. I decided to go faster and see if it would shift at a higher speed. As soon as I hit around 90 in second instead of shifting at redline it just kept revving and didn't shift. Is this a common issue with the GTP? Does anybody have any type of idea what it could be?