Stack Duplicates by guide bug

Stack by by guide data is not really working correctly it is stacking East coast and west coast ... For Example, it is stacking Comet OTA and TVE even though they have different guide data.

I thought I was missing some TVE east coast channels but not missing just stacked with West Coast.

2.3 Showing Gargoyles (1972)
6751 is Showing Beowulf (1999)

Yet if I stack by guide data 6751 disappears.

I now see that Stacking by guide data is not really a good idea.