I hope this is an appropriate thread for this post. If not, I apologize. When I was in the market for a new printer, I read lots of posts on this site and finally decided to buy a Canon ip4200. After reading about the methods for refilling the cartridges, I have decided that the bottom fill method will work the best for me. I have two questions: 1. I purchased ink from Hobbicolors and they have instructions for a top fill method. It says after filling, the cartridge should be squeezed and a few drops of ink should come out. Is this necessary when using the bottom fill method? 2. The instructions for the bottom fill method do not say anything about sealing the hole. It would seem to me that since the cartridge is not designed with this hole that it might be a good idea to put a small piece of tape over it. What do you think? Thanks for you help. I always enjoy reading the posts on this forum.