As I was working today (day dreaming) I remembered years ago I had a bolted in divider with a stock port just opened up a little, no lump port, I used a normal allen bolt for a head bolt. The divider had a notch to clear the bolt head and on the top I had a notched solid disk, like a washer without a hole but a grove in the bottom to hold the divider and a pipe plug to hold all in place. worked good cheap and easy to do.
If you have a stock head with the post still in the head, just make a 3/16 divider to go behind the post tack weld in a couple of places . Then a piece 3/16 X 1/4 to go in front of the post epoxy all in place and your done. This is how I did my last head before the new 12 port Kirby head.
I will try and post some pictures of this head and other dividers styles I have run in the past.
