Well it's not going well... one of the tracks has partially failed - the scaffolding has failed leaving the drive sprocket half printed (Unrecoverable), but I can either stop it and waste the resin used for 3 hours printing.... or leave it and reprint the failed one... wasting the resin of the failed one...
Think I'll leave it. Next print I can fit the hull and the failed track together. Another 5 hours then the turrets...