Originally Posted by
well biked
And here's one of my bikes with the shift cables under the bar tape. You can't tell it from the side, but there's plenty of slack in the cable to turn the bars because after the cable exits the bar tape it comes down in a nice gentle arc and then goes by the lower headtube and to the cable stop. Not forward at all.

That's a very good point. I never pay attention to that and seems like the guy at the LBS who built my bike didn't cut enough of those derailleur cable housings. I assumed once I trim the cable housing like FBinNY mentioned, the 80" cable should fit right into the RD. Will try that again tomorrow to make sure.