The present invention provides reagents and methods for RNA transfection and protein expression. A power management system is used to distribute power such that when the second electric cooking element is energized the first electric cooking element is de-energized. The method then provides for retracting the punch until the punch face is substantially coplanar with the orifice member second surface, and then cleaning the punch face and coplanar orifice member second surface to remove any residual paste thereon.