So this may seem like a silly question but wtv.. I have just recently aquired nordstrand nj4-se pups (the first non stock pickups ive ever owned) and I am dying to have them installed. I have never brought the bass to a shop before, and so I figured I should have it set up at the same time. I've been pretty excited. Yesterday, however I got thinking about the trustworthiness of the luthiers, considering ill probably have to leave the bass at the shop for a couple of days. I've been worrying about the chance of my nj4s being swapped on me for lower end pups while they're at the shop. Honestly, having never heard the pickups, and not being too familiar with them, I might nit realise if this were to happen. Now, my question is: am I just being paranoid?!? Also do any of you know of reliable shops, or shops were they will do the job in front of me, instead of keeping my bass days on end? I live in the Montreal area. Any help would do a lot to soothe my worries.