Going to get the frame tidied up by the spray shop I use but have one thing to fix first. Bought it with the ferrules in the cable guides. The back one came out ok but the front one, I think was part of a botch job to repair a broken guide. Does anyone have any experience of repairing these or putting a new one on? Ordinarily I would just drill the rivets out, but the C40 seems to have a top tube with no access hole - I am therefore concerned that the back of the river will end up rattling inside the tube. Thoughts/guidance much appreciated. A couple of pictures below.

