Oh, and
Quote:
Only made some minor mods
there's one of the things right there. Imagine this: I've got a Canon inkjet printer. I've had it for 3 years now. It's great - I've only made some minor mods to it. I removed a breakout board by the print heads, rewired some bits and put a different firmware on it. Doesn't happen.
I know that (very) occasionally there have been problems with various inkjet printers that some (very minor) modifications have fixed. But it's not in the same ballpark as 3D printers.