The fire control is the same as a standard AK. There are a couple extra pieces in the Romak 3 kit. If you have a PSL kit, there are even more extra pieces.
The fire control should go together like this (note the spacer ring indicated by the yellow arrow):
The fire control group is pretty much the same as used in the select-fire rifles. The spacer ring takes up the space where the spring for the rate reducer would be. Everything else goes together like normal. You may or may not have the assembly sleeve for your fire control group.
You should also have the pieces on the left of this pic:
The far left is the retainer pin for the bolt stop.
The middle left is bolt stop.
The middle right is an extractor spring.
The far right is a disconnector spring.
There should be a spring for the bolt stop in your kit. The spring should be about as long as the extractor spring, but a single wire like the disconnector. The bolt stop fits in the center support. If you look at it for a minute, you'll figure out how it goes together.
If your kit is actually a PSL, there may be an auto sear and a long, slender bar in your parts. These pieces are actually the safety sear for the PSL. Installation requires the drilling of the illegal third hole in the receiver. The BATFE considers the safety sear to actually be an auto-sear and therefore illegal. Drilling the third hole for the auto/safety sear would make your receiver an illegal machinegun, so don't do it.