I have one of the older 120 four-strokes.
Was a pita ... used to throw props occasionally ... the pressurised fuel system was messy ... way too expensive to feed ... inconsistent ... brutal vibration.
Yes, I know ... all my fault.
Anyway, I modded it. Took off the supercharger and fitted a normally-aspirated carb. Now, it is probably the best engine I own. Easy to start, frugal and never seems to quit. Probably only develops half the power that it used to, though. Am looking for another to convert, 'cos the quality of them is so good.
That said, the OS pumpers are great. I have one of those, too.