I really want to get the 4g CBR in before we go away on holiday in August, I’ve tried a couple of times to get it in but it won’t go through even with the aid of a curved taper!! So to try and stretch the hole I’m hanging a 12mm (000g) CBR on my normal ring for a couple of hours every day. It is quite a pleasant experience and the extra weight stretches the whole a little at a time. Hopefully it will work and I can get the 4g CBR in in a week or so. Fingers crossed.