For what it is worth, the Church of Israel in Schell City, MO hosts The Feast Days. Here's a link:
http://www.churchofisrael.org/commanded-feast-days/I believe there will always be different opinions on how to calculate The Feast Days. I have issues with Ken Lent's solar calendar and with most lunar calendars so I can't definitively say which days are correct. I believe that we will have to wait for Yahshua's appearing to learn how to observe them correctly. Until then, if we observe them to the best of our knowledge and ability, then I believe YHWH will remove the curses from the True Israelites and return the blessings as He promised in Deuteronomy 28.