Welcome to Just Answer and thanks for your question. You can contact Terry's business through the following site: http://www.montanacaregivers.net/connectpatienttocaregiver.php?caregiverid=1263690797
You will need to leave your name and email address and he will get back to you. As of the latest information I have found, he does not have a storefront, or business phone as of yet, since he is still at an early stage of developing his business.
You can also try contacting him through Facebook at http://www.facebook.com/people/Terry-Lucke/1760731435
There is only one listing for Lucke in Missoula, MT and it doesn't appear to be for him:
Amy Lucke, Nathan D., and Bob Lucke
There is no business address listed for Fat Hippie. An article on growing medicinal marijuana in Missoula stated that he had no storefront, and no business phone. The link I gave you is the only way to get in touch with him. That should be enough to give to the authorities to serve child support papers on him.
There is a Kathy K. and Donald R. Lucke in Bigfork:
Kathy K. and Donald Lucke
3155 Parkwood Lane
Bigfork, MT 59911
Here is a listing for every Lucke in Montana.