Well I've gone and made a stupid mistake!
While fitting my newly cleaned and rebuilt clutch housing I put the idler gear in the wrong way round and broke the casing.
Dry build without the primary gear went fine, I somehow flipped the idler gear around when building with the primary gear installed. Thinking it was just the oil seal catching I put some pressure on and this happened
Is it fixable? Or is the only option a replacement housing?
I spent so much time getting the case clean and only just had the bearings replaced. I'm so annoyed with myself for such a stupid mistake! Lesson learnt.