you could make your own anti flicker board very cheap but the time involved would not be better nor easier than soldering a 470resistor across each controlled lamp sockets. get a 100 of ebay for 1$ and get to it.

Well disregard my whole comment I just assumed the circuitry was same.

A loading resistor across a lamp is going to give a ground leak return to adjacent out of phase lamps (I think if I picture the circuit right) resulting in ghosting.

Can't you just replace them with non ghosting bulbs? Or is this a separate issue -im still learning too

Did you check if Seigecraft has a board?

http://www.siegecraft.us/presta/index.php

I think seigecraft boards would have the some issues as putting a resistor across the lamp sockets.

6803 games have two phases to the lamps unlike a -35 game. So one SCR turns on two different logical lamps. The positive side is the a/b phase and the ground return goes back through the SCRs. I think a resistor across a lamp is going to make the other phase lamp ghost. You can try it tho. If you only have a few lamps flickering, the ghosting situation might not show up.

Weebly makes a board for this game completely plug and play.