Looking good mate. It looks like you may have painted the bomb bay and engine bay in yellow zinc chromate; it's too late for the engine bay, which should be light grey on Avenger I's, but it can't really be seen anyway. The bomb bay on Avenger I's was painted in Interior Green, but you'll be able to do this (if you have painted it yellow) later, as there is easy access to the bay when the doors aren't fitted.
The reason mine's zinc chromate is because it's an Eastern Aircraft built Avenger II.