Christmas Lights

[toef]

I need some help here.

I have a few strands of C9 lights, and two of them are the regular screw-in type, but the other uses lights that kind of slide into the holsters, and include a latch to lock them in place. The problem is on the slide-in set of lights, it's 3 separate series circuits, so the two missing lights are causing two circuits not to work, so only every third light comes on.

I can only find replacement bulbs for the screw-in kind, but not for the slide-in kind. Does anybody have any idea what I'm talking about, or know where to find replacements?

I can try to get a picture if it helps.