Just bought my first tdi and first manual so looking here for help with my issue. When driving on the high way I’ll be at 3k-3500 rpms in 4th going about 60-65 and when I go to shift into 5th gear the rpms shoot up close to redline. The shifter says it’s in 5th but almost feels like it’s catching 3rd instead?? Is that a sign that it needs a new gear? Or the linkage is off? Or something else? Any help would be great! Thank you!