Here are related threads, not sure if it helps though.
https://www.project1999.com/forums/s...ad.php?t=27139
http://www.project1999.com/forums/sh...1&postcount=17
What deity are you btw?
I only ask this because some npcs are antireligion specific. Usually not merchants though.
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This could explain why you're still dubious. You were probably Max KoS in terms of faction..
https://www.project1999.com/forums/s...3&postcount=12
Probably another 400-500 turn ins to get past dubious I roughly guess.