In Assembly Builds, is there a way to over-write the component pricing as opposed to it pulling in the cost from the underlying inventory item?

I think the cost is tied to the purchase order/item receipts records, I don't think item costing is influenced by work orders at all

correct, the work order doesn't have GL impact, but the Assembly Build does. It pulls information from the item file. For example, we have 2 fillers who charge a different rate, but the assembly build only pulls in 1 hard-coded fill price

Do you know what price it puts into the GL when you make an assembly build, my best guest is it's using the avg cost field on the component

for fill labor (service for purchase) it pulls Field ID: cost

just to confirm, the assembly build uses that field?