Recently received a Combustion 5 but, alas, no truss rod wrench. I'm not a patient man but I did manage to find a cast-off 9/64" hex key. Rummaged thru my wife's art studio and...viola!
[url=http://s76.photobucket.com/user/Zooberwerx/media/Dingwall/DWTrussWrench_zpsf6syvz8f.jpg.html:t6ysab15][img:t6ysab15]http://i76.photobucket.com/albums/j14/Zooberwerx/Dingwall/DWTrussWrench_zpsf6syvz8f.jpg[/img:t6ysab15][/url:t6ysab15]
The handle is actually a hardwood ink stamper which has seen better days. Drilled a pilot and hammered the short arm into position. Works like a charm.
Riis