As far as mounting skis i agree with you to the point where you say how long have you been mounting skis bla bla bla ...then I would say to go to another shop ..or be smart enough to do it yourself big guy!
is it going to be another year of these threads???
yes shops mess up here and there but there is ONE way to prevent this from happening and save your self the money you/your parents spent on your skis....MEASURE it out your self put some tape down and mark it CENTER MOUNT HERE>>>>
good luck with it though man it deffinatly sucks when shops mess up your thangs