I'll copy an old post of mine in guild forums for you... I too went KOS.. but was able to fix it before the current methods of gaining newport faction were in place...
I have been working rather long and hard on getting my newport faction back.. I hit worst possible faction after assisting a few guildies with grobb necks and then having a rather drunken brawl.. Cyrus invited every SNP guard to have a drink with him... the guards all attcked me - they wiped!!
So I thought no problem - I'll just wack a few gnolls and get it all back.. WRONG!! Once KOS, you can hand in tokens all day long and get zero faction! the only way to do pennance was to eat a slice of humble pie... and go assist the newport farmers... each crop is picked up separately, then dropped in pack, then taken out singly and handed to the named farmer,...
It took me over 6000 crops and 2 weeks (well I did kind of get another faction setback during the process when I LD'd in NP with a 45hp DS on me) plus High Elf illusion, plus ambassadors writ to get to Dubious to the desk sergeant so he would reward tokens again.. 6000 crops.. that is 24000 individual mouse clicks!! (RSI anyone?)
Needless to say that now 350 gnoll ears (48 hours) later Nern has his covetted Amulet of Newport and is a very happy camper!
Those of you who are conemplating screwing with your NP faction... this is how you get it back!!
/end of saga[/i]