Beer flow rate is directly proportional to the time you propose changes relevant to the time you start the current drinking cycle. If you don't take into account the tolerances of the drinking partner, then you haven't done sufficient homework to insure acceptance of the new modification/idea that changes minutes/hours/days of previous work already done. So, basically, if you change something major when your fabricator isn't sufficiently soused (keeping in mind the car parts have to absorb the results of the 'over-soused' condition), then the 'pissitivity' factor increases exponentially resulting in having to apply more beer to reduce the impact of the 'pissitivity' factor. There-in lies your conundrum.