Cutting area expansion?

During the course of my initial mods, I removed the stock exhaust and fabricated a custom exhaust. So, that is entirely outside the case now (mounted to case). I have a honeycomb adjustable z-bed. I tested to see what the existing cutting area is and found it to be 218mm x 318mm. I did this by moving it to the most distant corners and test firing. Is there any other way to adjust it other than to move the limit switches (not really interested in this)?

Given that I plan to build the Y-1200 at some point, I don’t want to invest too much extra work in modding out the K40.

There are stopper bushes which can be cut in half which gives you a few more room. Not sure if it is worth tge extra efforts. Cheers!