Follow-up to M. kansasii

This post did not generate many responses but I am still trying to figure ou what to so I thought some pictures may lead to more interest.
This is the man with COPD with B/L upper lobe M. kansasii infection now with hepatotoxicity secondary to INH+RIF. He has some failure to thrive and looking below it is easy to see why: his upper lobes are kind of "chewed on". Any experience/suggestions on Tx of M. kansasii?