e36 outer ball joint question

I just had a maryland inspection to title and register my son's 95 318i and everything passed except the front ball joints. mechanic said there was too much play. i read on the internet that the ball joint is unique as it has rubber around it, causing the frequent mis-diagnosis that they are bad. I raised the front end and yanked on the wheel and they seem tight. i also used a large screwdriver to pry on them and did get some movement, but it feels like tight rubbber, not looseness or play. how do i properly check them and how do i convince the mechanic that they are good, assuming they are? no idea when or if they were replaced.
thanks!
Steve, 1995 BMW 318i 176,000 miles

Find an independent tech in your area that specializes in BMWs and tell him your problem. The tech should be able to give you a professional opinion and if all is well pay him to put it in writing.