Upgraded Vcore 3.1 to Enclosed - Bed is looking... bad!

Hey all I recently upgraded my RR 3.1 to an enclosed version (without the perspex for now) and the bed mesh looks utterly awful. I'm using a Beacon (latest version) Any advise where to start with this one? As it's got the enclosed frame now - what's the best method for squaring this up? Thank you in advance!