I made a Jr. Statesman and am having problems with the cap posting on the end. Just one of the thread starts is causing the problem as the other 2 starts work fine. Also the cap closes cleanly on the nib end just fine with all 3 starts, the problem is only when posting on the end. The pen is a special order for a good customer made with one of John U's feather blanks and I really hate to risk taking it apart to try and fix it as I don't want to take a chance on damaging the blank. Does anyone know of a trick to fix a sticky thread?? I'm pretty sure the problem is with the center band coupler as I've tried using end caps from other kits and have the same problem. Thanks in advance for any help you can give!!
Couple of observations in your statement to help you analyze and overcome the problem (we hope).
the cap closes cleanly on the nib end just fine with all 3 starts,
This is good!!
I really hate to risk taking it apart to try and fix it
Also, good, but indicates you have NOT "knocked out" any of the parts to replace.
I've tried using end caps from other kits and have the same problem.
If you have not "knocked out" any parts, you have not removed the threads, you have just changed the finial with the spring in it--would not have any effect on the "problem at hand".
Take a good look at the threads on the finial end, more than likely you will have to "clean them up" or remove a burr that is blocking proper engaging of the cap threads, which are very likely good or the first statement above could not occur.
Good luck!!