It’s actually not difficult to do yourself, for a basic setup you don’t really need any tools other than the allen wrenches that came with your bass and a screwdriver, and it’s a really useful thing to know how to do, as seasons change and the bass needs adjusting.
We have a couple threads on this, here’s a recent one where I recommend a video that will teach you pretty much everything you need. Plus, he does it on a 'ray 