I recently bought the Chasing Wind G20 frameset, when I came to building it up routing the rear gear cable was a nightmare.
I wanted to use a Shimano Di2 cable and tried for about 3hrs to get it fitted. The internals of the chainstay doesn't appear to have a hole big enough.
The other rear chainstay, non drive side was fine. The brake hose went in within seconds.

I contacted Chasing Wind and they were less than helpful, no offer to replace the frame, no reason why the cable won't fit.
They did tell me to cut the Di2 cable in half and re-solder it, what a total joke of a company.
I believe this issue is caused by the joint between the rear triangle and the frame.
I have spent money on new decals and invisiframe protection, now I have to remove them and send the frame back.

Has anyone else had an issue with cable routing along the drive side chainstay?