Hello, I discussed an Invicta watch with an NH35A movement a little while back. Upon doing my research it seems I need to replace the stem and crown, or at least the crown. Again, from my research it says I need to drill out the old threaded tube and replace the threaded tube with a new one that matches the new crown in question. My first question is how do I measure for the tube, I for the most part know how to measure for a crown, but I know there is a case side (the part that fits into the case) and an outside (the portion with the threading) diameter. Is just measuring the outside diameter sufficient in finding a suitable replacement and if not how do I measure the inside diameter because it seems it's in the case itself. Furthermore, do I use a drill bit that is the same size as the tube or do I use one that's slightly smaller? Second question is what drill and bits do you suggest getting preferably a set and what other tools will I need? If you guys could link me to them that would be wonderful. Lastly, will replacing the stem, crown and tube fix my problem of the stem and crown flipping the date as I'm unthreading it, details to the problem are in my original post.
Sorry for such a long post, but help would be highly appreciated.