I also recommend VAS, both Steve and his son Ray are wonderful people who are terrific at what they do.
I also agree, tell us more. What table, what arm, what cartridge (the cartridge's history).
What is wrong/needed? where do you want it done? i.e. in your home, or take it to someone who get's everything set up, and you carefully transport it, put it back in place, level it, done?
If you just want to see/learn the process, you can come here and watch me work on my arm(s), 26 miles from NYC, Plainfield, NJ, 07062