The last time I took mine to the shop, I asked them (nicely) to please be careful (as at the time in 2018, I had just had the wheels on the 94 powder coated and didn’t want to see any scratches)- they did fine at the time, but I would say the issue is likely that the shop won’t clean the leftover rubber grit on the inside of the wheel…sometimes that can result in a slow leak. I just want to dread doing tires as I have in the past it becomes sometimes an all day affair, lots of swearing, and I’m getting too old to destroy my back- hopefully this will avoid all of that (and yes, sometimes it is poor technique by my own action).