**********UPDATE**********
I had to take this one in for a fret level. I know, I know, Warmoth just installs the frets. I'd been so lucky with others I guess I got spoiled. After my usual setup of nut filing, truss rod adjusting, and saddle height setting, the action was still higher than I prefer and the hang up was on the G string from frets 13 on up. I took it to a new shop that has a guy that supposedly does great setups. He took one look at my setup and said, "You want it lower?" For comparison I had the other one with me. I said make it like this one. He did the usual brain picking of what factory settings did I want, to which my reply was, "as low it will go without buzzing." Long story short, he did a fret level and at one time told me my neck was defective and wanted to shim it to compensate. Pass! Anywho, he did a great fret level and I've got it playable like my other one whose action got that the bass the name "The 4th set." You know, fingers getting tired or slurred like my speech at that point anyway.
He did however have to order a new pickguard. In the process of cleaning up after himself, he likes to polish the pickguard. I nearly shat myself when I heard polish because the body and neck are both Satin finished, but he just did the pickguard. For whatever reason, whatever he was using was not cooperative with the celluloid Tortoise and it left it hazy and would not buff out. He was going to replace it with one in the shop, but low and behold, Fender and Warmoth's holes differ on the J Bass pickguard. I insisted that it was out of the question that a fret level should equate to new holes being drilled in the body. So, for a $40 fret level, it cost him $35 plus shipping for a pickguard. But hey, got a sticker and a story.
Oh, and be on the lookout for a YouTube video of burning celluloid Tortoise guard. We're gonna see how flammable that stuff is.