the ergo thing is more than just adding risers, or pull backs, and I for one have proven this to myself on the C10, and other bikes...
that elbow and between the shoulder blade pain, is caused by hand and arm position being tooo squeezed into the torso, and it forces pain on those joints...
a wider and flatterand even moreso turned " outward" hand position allows your elbows to flex outwards, not forced into your ribcage like the oem bars on both the C10, and C14 do... I don't have a problem with the 14 really, but I installed big bar ends, which let me spread my grip, and my elbows can flex outwards..
when yo get your hands flatter, and your wrists aren't bent at an awkward angle, its surprising just how much less pain, and associated arm and back fatigue, just dissapears...
kinda like having your arms facing like this... (---) instead of this. )--( narrow bars kinda suck, wide flat bars are a great relief...