During his visit to the Kampung Sungai Miang Jetty in Pekan, Pahang on Saturday, former Umno president Datuk Seri Najib Tun Razak said the party has to come up with a formula that would best suit the party to resolve its crisis.<br /><br />Umno is facing a crisis when its elected represensatives and members are quitting the party in mass seven months after its defeat in the May 9 general election.