Ok, I can see now how this might be similar to MC-108 (a block above one dispenser is at an upper diagonal to another dispenser), But pistons are unaffected by this particular setup.
I have found that by removing the upper blocks the repeaters will correctly fire the dispensers. This is new to me, but apparently this also worked in 1.4.7 I don't understand how the repeaters power the dispensers, the air block powers the dispenser? (a similar setup will NOT light up Lamps). Having air blocks or transparent blocks above the dispensers is a workaround for my particular redstone project, but not for anyone needing a signal from that upper block.
Ok, I can see now how this might be similar to MC-108 (a block above one dispenser is at an upper diagonal to another dispenser), But pistons are unaffected by this particular setup.
I have found that by removing the upper blocks the repeaters will correctly fire the dispensers. This is new to me, but apparently this also worked in 1.4.7 I don't understand how the repeaters power the dispensers, the air block powers the dispenser? (a similar setup will NOT light up Lamps). Having air blocks or transparent blocks above the dispensers is a workaround for my particular redstone project, but not for anyone needing a signal from that upper block.