Provided is a method which is capable of producing polycrystalline silicon resistors with a high ratio accuracy so that a precision resistor circuit may be designed. The x-ray tube parts may then be milled from the bonded metallic pieces. The data is stored in a database associated with an Internet website and includes vehicle data, lease data, and consumer data. The step of forming the top barrier layer includes increasing a concentration of a boundary protection material in the top barrier layer. One embodiment of the dual fluid cartridge disclosed includes a post having a groove formed therein which allows more fluid to be dispensed from the dual fluid cartridge while simultaneously keeping the increase in back pressure within ranges still suitable for handheld cartridge applications. The slots receive respective ones of the projections of the neighboring pin and receptacle modules.