If you do the eeprom swap you better backup your original, label it plainly so you can find it, and put it in 3 diferent spots and maybe to a cdr for safety before you muck around becuase like code65536 said every eeprom is unique to the drive it came on becuase it has the factory writing strategies for that drive only on it. The Zebra mod works becuase it adds generic best guess ones and some media calibration data to 401/411 drives. Some work very well after the mod, some don't depending on the drive and whether the new calibrations were what the drive and media used likes.
You can try it, but it will probably be worse, BUT you might get lucky, you'll probably just have to go back to the factory firmware and eeprom though.
If you blow up your drive bin it, that's the risks you'll take.