[Closed] SLX M666 brakes - leakage - new hose kit?

My SLX M666 brakes have developed a leak - after riding recently, the lever pulls to the bar and the pads seem to have been contaminated.

After close inspection I think it is probably the hose compression fitting issue that other have identified.

I'll try to get this covered under warranty, but I'm not too hopeful...

My question: Is it necessary to get a whole new hose kit... or is it possible to buy the correct banjo bolt separately with a compression fitting that can be assembled without special tools?