I'll take care of them somehow and whoever buys this plane will have a valid airworthiness cert and a clean title.
May I suggest you give the good folks at AIC Title a call. They really helped me out when I felt absolutely helpless
AIC Title [
aictitle.com]
I went through a similar issue, only my lien was from 1961 (!!), and I was trying to clear the title from a foreign country (imported aircraft to Canada from US)