Sumgai with a small problem

[amk]

Three euros for a Waterman red ripple 52V? Most unusually, for me, I didn't haggle!



However, there is one small issue; the nib has a small crack running up from the breather hole. I can feel it, but it isn't really visible.I seem to remember the right way to fix this is a little gold solder, and as it happens I have a small piece of gold solder that cost me a lot more than this pen... but I am sure there are people on the forum who can weigh in with some advice before I make any mistakes :-)