Whenever an Amp Maker kit is built upside-down – as here, where it hangs from the top of the combo cabinet – it requires some thought and planning. It’s best to use the Plain chassis version of the kit and order a mirror-image turret board, because when flipping the control panel by 180-degrees, the inside of the amp flips from right-to-left.”This has been a very enjoyable project (for a change); your guide is spot on. I have made amplifiers before, but always transistor, with good results, but not in the same league as yours!”