I got some very small dryboxes to fit on the XL. When I put the spools in the axle was a little too far forward so I made these adjustable Axle mounts. Including the STEP file if you want to make adjustments. I also added a file for some washers to put in between the spool and the drybox mount.
https://www.amazon.com/dp/B0CFLJCJSF?psc=1&ref=ppx_yo2ov_dt_b_product_details
The author remixed this model.
I got some very small dryboxes to fit on the XL. When I put the spools in the axle was a little too far forward so I made these adjustable Axle mounts. Including the STEP file if you want to make adjustments. I also made another model of a washer to go between the spool and the spoolholder.