Boardman CFi - Shifting cable bites into Frame

My wife has really enjoyed her Boardman cfi but suddenly the SLX shifters with the 105 derailleurs front and back have become stiff. Our excellent LBS has made it much better but the bottom line is that apparently because of the internal cable routing and sharp bend to the from derailleur without a teflon sleeve, the wire has started to bite into the frame making it stiff to shift on the front chain rings.

Does anyone else know of this problem on their Boardman or any rectifications?
Has anyone drilled the frame and put a grommet or spacer in to increase the curve and broaden the feed-in point to the frame?

My worry is that this is going to total the bike and a new one needed.

Not so much the money just that she loves it but one wouldn't buy another if it's an in-built problem

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