The guy I use I keep confidential at his request. Here are two recommendations from over on the DIY forum, I have not used either so have no first hand knowledge.

https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=609168#Post609168


http://www.bertramandco.com/
Booking African hunts, firearms import services

Here for the meltdowns