How to copy stereo audio data from [waveform~] to [buffer~] ?

I'm trying to use [waveform~] to select an area of a track and copy the data to a different [buffer~] object but it is only copying the left channel.

The [buffer~ TuneA 200. 2] connected to [waveform~] has a [groove~ TuneA 2] for audio playback and produces stereo sound that I can hear, and the patch is set to produce. The [buffer~] objects that I am copying to also have 2 channels assigned and so do the [groove~] objects for playing their audio.

I have added an extra [waveform~] and linked it to the original [waveform~] then sent them both a message "name TuneA x" where 'x' is either 1 or 2 to identify which channel to display. This seems to work perfectly fine and functions performed in one [waveform~] are shared by the other. I've tried selecting an area inside the [waveform~] assigned to channel 2 and copied to a different [buffer~] but I still get a left/mono channel copy of the audio into a different [buffer~] .

The copying of data is done using [peek] and works fairly well, except for the issue of not copying both channels :/

Many thanks for any help/advice in advance