A method is disclosed for cleansing bowels prior to a colonic procedure utilizing conventional preparations along with potatoes. The data is accessed from a relational database, and then a factor analysis function is performed on the data to create a factor loadings matrix that has factors as columns and observed variables from the customer transaction data as rows, wherein each of the observed variables is assigned to one of the factors in the factor loadings matrix that has the maximum value for the row. The method further includes surrounding a portion of the microcable with an electrically conductive metal ring. An apex angle of the leading edge reinforcement is the same as an apex angle or arc transition of the tail leading edge skin.