Majolo, I watched the Goulet video, then my buddy Frank C, came over and taught me to do it. I did the disassembly and reassembly on three pens and then taught it to my daughter who did the same, she disassembled and reassembled three pens, and then she "taught" Frank who tried to be a bad student. Anyway, I learned a lot and if any pen was made to learn on, it's probably the Eco. I wouldn't want to try it on my Pelikans because if I messed it up, I'd be sick. Anyway, good job.
That being said, Kelly, I don't disassemble my TWSBIs when I add silicone. I am one of those weirdos who found real silicone spray, but this method works well for me with the silicone that I can drop in or if I use a toothpick, I take the silicone into the barrel through the top. I then use the toothpick to smear it around and then I run the piston up and down until everything feels smooth. I would suggest you do this whenever you feel the piston to get a little sticky. I would say that I grease my pens after every fill of a supersaturated color and super cleaning, but at least after every fourth fill.
Keep in mind, that I am one of the most abusive TWSBI owners on the market. I use my TWSBIs every day with super saturated inks that I keep in for a month at a time. I have custom ground nibs and I write with my pens a lot, and I even share them with others. While many people baby their pens, my TWSBIs and Kustom Kara's Inks (aka KKInks) are my workhorse pens. At any given time, I have 30 pens inked up and I use them, I expect to fill my pens with 366 different inks this year, and most of those fills will be in my TWSBIs. (As one time, I also own more TWSBIs than anyone else in North America, but I've been surpassed.) Let's just say that today is a "slow" day, I only have 6 TWSBIs of a total of 23 pens inked. I will probably ink up another 3 TWSBI's tomorrow.