I'm considering picking up a Data East game that has the large dmd (192x64). In doing some homework I've learned that if the display goes bad they are hard to come by and expensive. I've also learned that many stay away from these games because of that reason. Are there alternatives for this display in case one goes bad? I've read some info about the DMD extenders but it's older information and I can't figure out the actual process of using them. Are they still available? Is it a good solution at a reasonable cost?