You need to put a shim under the neck to compensate for a thicker bridge, then you'll be able to get a little lower action.
I think you paid the high end for this bass, shops were selling them off for £150 brand new. Nonetheless, these are nice basses, if a little heavy in weight for my liking. 👍
A niggle I have with these are the ill fitting pickguard to the control plate. 🙈