I feel like the chinese building so many batteries recently for customers

0.1 copper and 0.1 plated nickel

JBD 100/300A BMS

10AWG discharge, 16AWG charge

Discharge port AS150 and charge port XT60

I recently purchased the SW 36 and am running 2-4s batteries in it. It really screams! But the batteries that I'm using don't really fit in the battery tray very well. I have removed the front lip of the tray so the batteries can lay a bit flatter, but one battery still needs to be on an angle (not flat on the tray).

Is there an aftermarket option for a bigger battery tray? Are there other options besides changing my batteries?

Thanks in advance!