repairing a cut shift knob...

[ehD]

so i bought a used boxster where the previous owner had cut the original shift knob, claiming it's easier to shift... well being that i was relatively new to manual cars i just nodded in agreement ignorantly..

so anyhow this knob basically is kind of loose and can be pulled off, which kind of makes shifting mushy. the leather wrap thing around it is really loose too. so i'm wondering what's my best way to fix this cause i'm actually having a bit of trouble shifting. would simply getting an actual short shift kit solve my problems. should i just glue the knob down? do i need to find someone that can like sew back the leather wrap?

any help is appreciated, i'm just so damn ignorant on this stuff =x