Hurray! Did my project tonight after glueing it again! A little bit more of a eye sore than the first time but i wanted to make sure it didn't come off again. Took Kristian's advice and stuffed as much jizz up behind the undercut to make it solid too.
alpha is what its called. Grade i can guess at. Took me 4 sessions but mostly that was due to the f'ing starting hold snapping felt reasonably OK in the end so going with only 7C but could well be harder.