Warp openers/closers that can only be repaired at a space yard.

[Suicide Junkie]

[neo]Woah[/neo]

One thing you need to check is:
- Is the ship really still cloaked?
1) Can a ship without sensors see the ship?
2) Can a ship without sensors see the ship after saving and reloading and/or ending your turn?

Your ship may still be acting as if it is cloaked, but not have any actual ability to hide.

If the ship really is still cloaked, how would you encourage a player to use the component as soon as possible?
One good solution is to add a maintenance penalty to the component. Say 5% of the cost of the ship each turn. (Once you use the component, you won't have to pay the penalty resources any more)