Seven different issuers generated a relatively strong $3.94 billion in jumbo non-agency MBS during the third quarter, but the sectors resurgence in 2013 seemed to be losing steam and faces an uncertain future. Jumbo MBS issuance declined 9.1 percent from the second quarter and one transaction Shellpoints second of the year was pulled back as September came to a close. Redwood Trust managed $1.18 billion in new issuance, a 34.1 percent drop from the second quarter, while the two other jumbo veterans, Credit Suisse and JPMorgan Chase, saw reduced production as well. Industry participants are divided...[Includes three data charts]