So I have done a search on this topic and only found the solution of a bad clutch sensor. (For those that don't know what rev hang is, it in the hanging/increase in rpm when the clutch is pushed in to shift gears).
My cars cruise didn't work when I got it so I installed a new one and cruise worked afterwards (which if the sensor was no good, it wouldn't).
I'm sure I'm not the only one with this happening to them, so what are other people doing to solve it?
Thanks in advance!