Dropshift

Hello guys first post here, I am currently having issues with my speedometer, 2004 a4 quattro, went from a 5speed to 6 speed, now I have no spedometer and Km won't count, also fuel Guage seems a little off sometimes, i have also noticed a strange noise ckming from the front left occasionally when starting from a stop and only happens when i first start ip and drive off. as far as I know with this car the speedo runs off of the ABS sensor, when I try to reprogram the speedo and enter codes for the 6 speed the car says it's accepted but the speedo still doesn't work. Has anyone run into something like this before?

It would be awesome to have the original speedo (so my cruise control works)

Thanks a ton guys!