dac~ sends output #2 only sometimes...?

ok. dac~
sometimes when i open a fresh Max window, this is from opening the program fresh, and i create a adc~ or ezadc~ object, link this to a [dac~ 1 2] (as i would like sound out both R and L channels), i receive a signal only out the “1” channel... and if i change the [dac~1 2] to [dac~ 2], i receive out the “2” channel only... so its either out 1 or out 2.... but “dac~ 1 2” doesn’t give me both. To confuse me even more... i open an old max patch (old as it a week old with the same version of max and same install) and my [dac~ 1 2] objects work just fine, providing me signals out both “1” and “2” channels...

im confused. It seems to me like a coding issue maybe? Given my troubleshooting results..

please assist... it would be greatly appreciated..