Me neither.
However, some Rics and copies tend to start to fold/buckle at the neck-body join, where a lot of strength has been taken out by routing the neck pickup; it's known as "neck lift".
If that happens then the truss rod is irrelevant.
It's the reason RIC don't like you putting other brand strings on their basses, as they don't know the tension.
If it happens, you have to brace the neck straight, fill in the pickup cutout and re-route it (or go for a 4000).
The way you can spot it is to turn over the bass and see if there is splitting/separation between the thru-neck and the body wings at the neck heel.
Right now, we don't know if the original issue with the bass is neck lift or bowing, but until the truss rod is fixed we can't really tell.
Me, I'd take the bass as a luthier playpen, on the basis that getting it totally wrong would be a learning experience.