Help with AMR&D paperwork

I recently install the AMR&D 160hp upgrade with the Hoerner Style Wing Tips. I have some questions on the STC paperwork and I have found out today that Art Mattson from AMR&D recently passed away. Can someone help me with the questions I have?

I can be reached at daryltheobald@yohoo.com or 605-216-3080.

Thanks for the help Daryl
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