I struggled with this one, grinding to a halt with about a third done. I persevered and did eventually complete it. Not sure if I enjoyed it or not. I'll do a Bunthorne to relax now ;-)
11 A. Setter = something that sets, so the first word
A clanger is a ????. so describing it could be ????(the same four letters) with a Y at the end.
A 5, 5 is the owner of a large corporation/stomach.
Hi Griffin! Re 11A - Lou Carpenter's 'nickname' for Harold Bishop in Neighbours. Must be my twisted mind but I found this puzzle pretty straightforward compared to Enigmatist yesterday.