Not sure I would be that much help. I flew it a few times on my days off for then owner, Brian Bromley (Bensbach Lodge), in the early 90s - it was an ex MAF machine - Brian had it worked on in Australia (by his son?) before bringing it back to PNG - it was flipped upside down over running a strip in the Western Province (Morehead?) - re exported to Australia and that is about it.
Pic taken at Arufi rescuing P2-DEQ
Is MFU back in the air?