Have you tried calling Weber spare parts?
Also try Bbq Galore. The Dragon Kamado is similar to the Akorn and uses a grill and pizza stone as a deflector. See if the grill fits.
Called Weber spare parts 12x7 they only have the "V" grates now as 7441 is an obsolete item now.
The part no is now 65947.
$33.00 now on order to be delivered.
Heaps cheaper than $122Weber 7441 Replacement Charcoal Grates, 17 inchesWeber 7441 Replacement Charcoal Grates, 17 incheswww.amazon.com.au
Depending on what you're doing you can use the 65947 with the V up or down. In the past the V grate was used in the more expensive kettle models and the 7441 in the entry level models.
When they next have a council clean-up near you, if there's an old kettle on the kerb and you might be able to pick up a 7441 spare.
You light the firelighters and move the charcoal baskets over the lit firelighters to get the charcoal going.
You can use the same idea in the Akorn if you use the charcoal baskets you got with the Akorn.
You keep the baskets together for searing and move them to the sides for indirect cooking when the charcoal is ready, You put a drip dray between the baskets during indirect to stop the crap/grease falling down the middle.