Halcyon has posted a recall for their OPV springs

From Halcyon's website:

The following steps will assist the customer in identifying the serial number on their Eclipse, Evolve, Explorer, Pioneer or CCR35 buoyancy compensators (BCDs) manufactured between January, 2006 and September, 2008.

If the serial number begins with the following sequence, the OPV spring in the BCD should be inspected:
16, 26, 36, 46, 56, 66, 76, 86, 96, A6, B6, C6, 17, 27, 37, 47, 57, 67, 77, 87, 97, A7, B7, C7, 18, 28, 38, 48, 58, 68, 78, or 88

Halcyon apologized for the inconvenience and encourage Halcyon BCD and Inflatable owners with questions to contact their local Halcyon dealer, regional Halcyon distributor or Halcyon Tech Services directly.

I have an Eclipse (which is the coolest BC to dive) and I had one of the less-then-perfect springs. My spring looked just like defective one pictured on Halcyon's website.  The recall replacement was a quick and easy change out at Virginia Scuba. My 80 lbs lift bag OPV spring was fine.

Check your kit serial numbers, get the recall done.