Hi, I just got a two-piece cue today via ebay. It's sold by "Doctor Cheng" (made by Taiba cues). I want to get joint protectors for it, and I'm trying to figure out what size to get. I'm new to pool cues, so all I can do is go by what I'm reading on the internet 
I have to measure the diameter of the pin plus the number of threads per inch, right? If so...:
1. When we talk about the pin's diameter, are we talking about the diameter if the threading is included, or is that the diameter of the pin itself, as if the threading wasn't there? With the threading included, the diameter appears to be 5/16".
2. It's tough to count the threads. If I look on one side of it, I see 8, and on the other side I see 9. Making things more complicated....the pin isn't an inch long, more like around 7/8" or so. So I just measured, and it appears that a half-inch contains about 6 and a half threads. That means I need...............?
3. Finally...the stupidest question yet. The cue came with a basic 1x1 cue case, divided inside into two halves. Which way do I insert the two pieces of the stick? Am I right in thinking the "tip" piece goes in so that the tip part is "up", by the zipper, and the "butt" piece goes in so that the threaded pin is "up" (next to the tip)? That way, the "thicker" parts of each piece are both "on the ground" if I stand the case upright. Is that correct?
I have to measure the diameter of the pin plus the number of threads per inch, right? If so...:
1. When we talk about the pin's diameter, are we talking about the diameter if the threading is included, or is that the diameter of the pin itself, as if the threading wasn't there? With the threading included, the diameter appears to be 5/16".
2. It's tough to count the threads. If I look on one side of it, I see 8, and on the other side I see 9. Making things more complicated....the pin isn't an inch long, more like around 7/8" or so. So I just measured, and it appears that a half-inch contains about 6 and a half threads. That means I need...............?
3. Finally...the stupidest question yet. The cue came with a basic 1x1 cue case, divided inside into two halves. Which way do I insert the two pieces of the stick? Am I right in thinking the "tip" piece goes in so that the tip part is "up", by the zipper, and the "butt" piece goes in so that the threaded pin is "up" (next to the tip)? That way, the "thicker" parts of each piece are both "on the ground" if I stand the case upright. Is that correct?
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