A golf club transport case includes a first tubular body having a closed end and open end. The intermediate process module may be coupled to the load chamber, or both the load chamber and the transfer chamber. Preferably, fullerene nanotube-containing felts are refluxed in an aqueous solution of an oxidizing acid at a concentration high enough to etch away amorphous carbon deposits within a practical time frame, but not so high that the fullerene nanotube material will be etched to a significant degree. The first pre-charge voltage is higher than the equalization voltage and the second pre-charge voltage is higher than the equalization voltage and lower than the first pre-charge voltage. The signal-to-noise ratio of the touchscreen system is improved by extracting the DC shift of a touch signal during a monitoring period and then subtracting the DC shift before integrating the touch signal.