I stopped using a popular garage in Cwmbran because they guy went on about my "alloy" banjo bolts not being suitable for road use. I have Hel braided lines with stainless steel banjo bolts... E-git!
I also never used a garage which is 2 miles from my house because the two times I went in there he talked to me like I was an idiot. I now use a garage that is 15 miles away because they were very friendly & willing to take my race cans & not fully legal horn