gcfcos

hi guys. well ill start this story from the start. kept blowing o/s/f driveshafts and later found out this was because the engine mounts were gone. replaced these and just fitted another new o/s/f driveshaft. took it up the road and wobbles/knocking to o/s/f and feel vibrations through pedals and steering wheel. jacked car up to check over. front diff has play in it by moving driveshaft up and down but it has been like this for 2 years. i then jacked it up with all four wheels up in the air and ran it in second gear. i then noticed both rear and o/s/f wheels were spinning but the n/s/f wheel was not. also the knocking is worse on right hand turns and shuts up on left hand turns. help please!!!!