As I understand it X-Tol is still being manufactured by Champion, along with all the rest of the current Kodak chemistry.

The problem is that the distribution system has been made more complex by the Kodak petition for bankruptcy - some of the intervening chains in the distribution system are disrupted somewhat.

Champion is also one of the unpaid Kodak creditors, so they may be a bit grumpy.

I do see new stock of Kodak chemistry being loaded on to shelves though in at least some of the places I shop - and XTol is part of that.