Thanks guys. The rattle in the cavity was improved by making claws first and putting them in, then adding the rattle on the tail side of the cross member of the claw. I'm happier with the rattle a little further back anyways for hook placement.
I use a jig head I manufacture through my business, Confidence Baits called the Draggin' Head. Most of the ones we sell are 1/8 and 1/4 oz on 2/0 and 3/0 hooks. I had to jump up to 5/0 on this craw though.
I also learned that you can make your claws float by being intentionally sloppy with sucking air into the injector. I draw it in and out, sucking air, then shoot it quick. It gives me full pours usually, and it leaves bubbles in the claws. Call it a happy accident that I decided to repeat intentionally.