Further to my previous post, it turns out the issue lies with the body of the IB-1. A few of the units were not routed deeply enough. I was advised to try and reduse the thickness, which I was not comfortable with. As careful as I was, my worst fears eventuated.Click image for larger version. 

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Any ideas as far as Toggle switch plates or pick guards available, to repair it without ordereing a body and spending more money on paint?