Thanks tjm! Sorry to hear you couldn't complete it, we had a great final sequence but I think nobody has seen it!
Yes you're right, we were planning on adding an automatic grip and hold but didn't realise it was such a problem until we'd tested it from end to end and by then it was too late! It's the dangers of testing small bits at a time!
Strange that the movement was unresponsive, we'll have to look into that post-jam