Morgan - and others having difficulty adjusting Gaias.
You're right, it is tricky particularly as the locking nuts provided are pretty useless. There's an easy alternative that makes the job of aligning the logo forward dead easy.
Ditch the locking nuts unless you want to raise the speakers or add a tilt. Then use one of these 3 alternatives all of which allow the Gaias to be progressively tightened against a load, so you just stop tightening when the logo faces forward.
Wavy spring washers M8 or whatever size thread you use -
A4 MARINE GRADE STAINLESS STEEL WAVE WAVY SPRING CRINKLE WASHERS METRIC M1.6-M20 | eBay
Neoprene washers that squash as the Gaias are tightened -
BLACK FLAT THICK NEOPRENE RUBBER WASHERS - M3 M4 M5 M6 M8 M10 M12 M16 M20 | eBay
Felt washers that squash down.
I use the wavy spring washers - a couple on each thread gives at least one full turn of adjustment to keep the Gaias secure.
Peter