If I may, I'd like to get back to the purpose of my original post for a moment.
As I stated earlier, I had built two extensions for a client's cue that when used at the same time made the cue a little too heavy to comply with the legal weight limit. Some might say that the answer to this predicament would be to just not use both extensions at the same time, however that would take away from his ability to use a cue that might be absurdly long, but is still the length that he wants it to be and is his "legal" right to use.
Bob Jewett answered my question as to what reasoning went into making a rule on a maximum weight limit by essentially saying that he didn't believe there was any. He also said that he didn't think anyone ever bothered to weigh suspect cues. But what if they did?
Today, I weighed a popular butt extension made out of aluminum. The extension weighs 6.8 ounces. Now if you put that extension on a 19-oz cue, the cue will be over the legal weight limit by eight-tenths of an ounce. So now what happens? Do we tell players that they cannot use a cue heavier than 18 ounces if they intend to use that extension? Or do we tell them they cannot use that extension if they are going to use a cue heavier than 18 ounces?
I know it might seem a bit silly to be concerned about this matter, but it's only a matter of time until someone uses this rule against an opponent in a major competition. If there's no good reason to have the rule, it should be eliminated.
Roger