Spares kit

[Learjetter]

I’m looking to build up my spares kit, mainly to preclude long down times awaiting parts or overhaul to fix common issues and wear items. So far I’ve come up with:

Seat rail blanks
Seat roller housing
Engine driven fuel pump
Prop governor
Flap cable set
Electric Aux fuel pump*
Cowl flap motor*
Exhaust gasket, studs, nuts*
Roto-coil
Rocker cover gasket*
Gear position switches*
Main tire
Main tire tube*
Spark plugs*

*items to carry on-board

What would you add to or remove from this list?