Its not rocket science, most ski techs are high as a kite 95% of the time and paid $12 an hour, do you think they really care? Clearly they dont, see the OP's problem above......
Bingo. Maybe 1% of techs are ski scientists the rest are people who want a job in a ski town that doesn't piss test.
um, most ppl don't know the minutia of how bindings work and how they are supposed to be mounted. that's why there are ski shops with ppl who are trained to do such things. for me, i wouldn't touch my bindings with a ten foot pole unless i got the proper training.
Bindings are super super simple devices, they are certainly not high precision. Most of a binding is for show, they haven't changed since like 1960 in terms of how they actually work. A look nevada from 1972 and brand new FKS are pretty much the same binding. Materials are different and you got some minor advancements to help get the boot out like afds and rollers but they work exactly the same.
Companies almost always put their tech manuals on-line so if you want to know exactly how the techs do it you can get the same training they do which is three pages of pictures and two dummy mounts on a 2x4.
Everyone is free to do as they wish but outside of a couple of places here and there nobody will do a better job than you because nobody cares half as much as you do. For every OGE in Burlington or Skiworks in Killy (Excellent techs) there's Back Country Experience in Durango (Great store, horrible techs) who on a remount with new boots charged my brother, took the skis for almost two days and didn't do a god damn thing. Seriously they drove the heal piece to full forward and gave them back. He was full indigio (dude you gotta dial that FP up), hanging on by the binding wing nubs. Buckmans one time on ptex job for a cousin of mine ground pretty much new skis down to .01mm rather than just do actual decent ptex work. Wicks waaaay back in the season rental days didn't reset din and rented my sister a pair with the din all the way backed out. The rental shop at the bottom of Highlands gave my sister's fiance a pair of MX 98's with three stripped heal screws which is a great way to end up dead in the woods. I could go on forever.
Even if you don't want to do your own work inspect inspect inspect when you get your stuff back. Gaps, stripped screws, mismounts etc etc etc I don't leave until I've checked whatever they've done and it's all good. Every time I click in I do the kick thing with the shake on both skis to check forward pressure, if a ski needs to be ground ask the dude for a linear base structure if he doesn't know what your talking about understand all your getting is them throwing it on the machine and handing it back to you which is fine but you should know. If you got a fancy at setup take ten mins dicking with them and understand how they work so when you go to the shop you can talk to the guy and you'll know in 15 seconds if they know what they are doing.
We go downhill at highway speeds on nothing more than a hunk of wood, plastic, epoxy and 1/8" metal edges, alot of times drunk, trusting random ski tech X is not a good idea. Great people but not trustworthy by default.