I did more shoveling snow and painting than working on this over the weekend, but here is what I did do. To reduce the gap between this C# key and the G# key, I started trimming the top of the rod. I did notice that as this gap was getting closer, at the lower end, the arm to the cup was getting closer to the post for the B/Bb keys. I kept trimming the top of the rod until it was almost hitting this lower post and there was still 2mm between the C# and G# key. The gap at the bottom between the rod and post was now 3mm. I was planning on soldering an Extension on the lower rod from the existing rod to eliminate this gap. I tried bending the cup arm for more clearance, even building a jig to keep the rod from bending, but could not bend the cup arm without bending the small stub of a rod at the lower post. I tried heating it to bend to arm, but all this did was show silver at the braze joint where the arm meets the rod. At that point, with a 3mm gap at the bottom and unable to bend the cup arm the way I would have liked to, I heated and removed the arm and cup and went back up top and finished trimming the post so that the tops of the B and C# to G# keys were both 1mm. This looks good up top. My thoughts are now to use the top of the newer rod and the bottom of the existing rod with a joint somewhere in the middle. My choices are to braze a butt joint with silver or to solder with a brass sleeve. Either will be clearly seen. The sleeve would help with alignment and soldering may be cleaner, although I have no experience soldering onto nickel plating. Looking it up online there is a lot of conflicting information, no surprise there. Can I solder a brass sleeve to nickel or should the plating be removed first? If so, do I need a special flux and solder?