Center bearing mount/balance of driveshaft

[GT BMW E30]

From the beginning. My guibo (#2) was shredded. I replaced it. Still had a slipping/wobbling effect. Then I changed center bearing mount (#10 with its other conponnents) but did not mark how I took it off. Still getting a slipping/wobbling effect. Changed LSD. Still the same. Ordered another Center Bearing Mount form BMW and the parts guy told me since I did not mark the drive shaft then it will need to be balanced.
1. How do I get this done? Should I buy a new drive shaft

[BakesE30]

Every driveshaft I have pulled has had a white dot on each half of the driveshaft that you line up. If those are gone, try lining up the u joints before going out and spending money

[SamE30e]

Driveshaft isn't phased properly, like Bakes said, look for the white marks and line them up, it should dissapear.

[ejnight]

driveshaft isn't phased properly, like bakes said, look for the white marks and line them up, it should dissapear.

+1

[GT BMW E30]

Thanks guy will look for dot. Hopefully this weekend I got it parked now cause I started to hear metal grinding.