I don't worry about the slop too much. Some slop will never affect the cars handling. I actually took a car and shimmed out all of the slop one time and it was the worst handling car and never would go straight. I then took all the shims I put in out so it would have the slop again and was amazed how well the car worked and how it would now go straight.
I think many get too carried away and worried about slop because some 5$500 plus car has less slop than are $350 car. Work on setup more and maybe shim a little slop out but just run it because the slop won't hurt you.
I remember when I ran for Schumacher and Chris Tossolini at that time won the Nationals and also raced for Schumacher. I was on vacation in Florida and stopped by Schumacher to get some parts and check out the place. They had Chris's touring car at the shop and when I looked at it it had easily 3 times more slop than my Schumahcer car did but he didn't have no problems that year lapping the field with his car. Main thing is slop is just not really a huge problem. Ever since that I don't worry about it too much. I will just change out totally worn parts in the drive train but mostother slop I just leave it in the car.
Mine is fairly free and not a ton of slop...the only slpo that bothers me is the slop that you get in the bearings that bothers the camber adjustment...it can be .5* sometimes...