I missed that you were planning on putting a Hot Rails pup in a modified p-90 mounting ring. You will still need to do some routing or chiseling to get that pup to fit into the Jazz rout.
OK, I think I'm starting to get the whole picture. Correct me if I'm wrong: the Hot Rails pup is going into the bridge Jazz bass pup rout with a dog-eared p-90 mounting ring (converting a Strat single coil to a p-90). The neck Jazz bass rout will be used exclusively for the battery (no pup) with a dog-eared p-90 mounting cover over it. I think you could have avoided a lot of confusion and contention if you just would have explained things a bit better. You didn't need to resort to all of your name calling and accusations in your post #8. Your idea as I understood it was a complete fool's errand, but that's because you didn't clearly explain what you were doing.
You said that you "don't always have time to learn new things", (that's obvious), but in that same token, no I didn't look at any of your videos on Youtube...I don't have time to waste doing that. So sorry if I don't know all about you. You also know nothing about me. But FYI, I've been designing and making custom guitars from scratch for 20 years and designing and installing and soldering all of the electrical components. I actually am an expert at soldering and have taught classes. I know about modding because I've been there done that.
I admit that I was being sarcastic in my post #6, in an attempt to point out the fallacies of the project as I understood it. Sorry if it rubbed you the wrong way. But that was because you hadn't clearly explained what you were trying to do and I didn't understand all that you didn't say. You could have just explained it better in the beginning or corrected my misunderstanding instead of calling me names. That was very juvenile and rude
So, if you want my help you can ask for it. If not then I'm totally fine with that too.