OK... for those of us that have the newer Knights, DISC's, Mountaineers, or the new Ultra Light I would guess we need to introduce a new 'Bolt Assembly Rule'
If, when you take your bolt apart to clean or change available options, one of the things that makes the rifles so versatile, then you re-assemble I would suggest following the fallowing options.
1. Make totally sure that the secondary safety is turned in as far as it will go - sometimes this take a hefty twist to get the last little bit.
2. Insert the hammer assembly in the bolt housing and turn it clockwise until it stops turning.
The third step is where it get a bit interesting...
a. In the older blots and the majority of the bolts you would then rotate the hammer assembly back counter clockwise until the hammer assembly and bolt housing are aligned correctly. Surface 'A' Should align with surface 'B' and the 'Striker Tip" should align with the 'Detent" at the top of the strike ramp. With alignment, begin carefully un-screwing the secondary safety until it is completely out.
This picture shows the correct alignment...

Step 'a' is the normal procedure for the bulk of the older Knight Bolts. But, in some cases it will not work with the newer bolt assemblies.
If you have completed the re-assembly through step 'a' re-insert the bolt in the rifle and if all works great you now a ready to go. If it does not fire the primer or the cap or the bolt handle is very tight/difficult to close or lift.
then move to step 'b'
b. remove the Bolt again - reset the secondary safety in to pull the 'striker' out of the detent. Then rotate the Hammer Assembly one full turn counter-clockwise. Release the secondary safety and re-install the bolt. The hammer assembly will now operate normally.
I am certainly not the best writer in the world so I hope those that have a Knight understand the procedure.
mike