[Jacksonlll]

When you checked the timing gear, did you see it turn?
Or, look down in the dist hole and see it the shaft is turning. If it is, your problem is all on top and should be an easy fix.
Retorque that head. May be too late.
If you were on a tour, aren't there members who could help you? Sound like you are in a club.
Let us know hat you find.