I inherited a 2015 F800 GS with a small hole drilled in the engine case, at the heat exchange tube fitting. The guilty party was trying to extract a bolt after they broke the head off. Now when you're all done laughing and shaking your heads I'd like to pick some brains...Has anyone ever dealt with an issue like this? Is there a possibility of an expert machine/weld shop filling the hole and retapping for said broke bolt? The bike has 25K miles on it and other than needing new tires is in otherwise excellent condition. Just thought I'd ask before investing a lot of time online and on the phone researching this.