Contact Browning - mine was just over 2 years old and doing the same thing. Browning repaired it no charge. Of coarse if you ever delt with the Browning service center count on 8 to 12 weeks before you see the gun again. Tim
Top lever spring has likely weakend ....about 10 bucks for a new spring from Brownells. Easy 5 minute changeout. When you store it in the case trip the lever so the spring does not stay under tension. I've seen several BT's do the same.