I have just see this:https://www.northwestguitars.co.uk/truss-rod-adjustment-tool-phillips-head/
It looks like it *might* be just the thing to adjust my JMJ mustang when it needs a tweak, but it depends on whether there's enough room around the pickguard cutout to get it in place.
I know that StewMac make a tool that will do the job, but ordering that one from the US is quite expensive in comparison.
Has anyone tried one of these Hosco ones?