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i have took tru balance cues and cut them in two about 5 in. from the rear,this is a simple way to remove the steel rod used for weight.then core both directions,turn a piece of maple to fit each core,leaving a larger center section to the desired length to be added.keep in mind the joint area size when lengthing,the added section will be hidden under the wrap.i would be a little cautious of coring a titiest,it could fault the old glue joints.on billiardcues.com are some of the tru balance cues i have done,look under tom reed cues.