I am a beginner and I just bought a series of refillable cartridges and inks for the Epson 3380. I am going to try the fill tomorrow. After I use the syringe and the blunt needle for any color, is there a cleaning process for the syringe and needle? Flush them out with water? Sounds trivial but the instructions don't say anything and I searched the forum for any suggestions and didn't find any.