Has anyone out there any experience with refilling the Canon BCI-15 ink tanks (both the black and the tri-color ones). I bought an i70 printer the other day from a local thrift shop for the colossal sum of $4.50 and the thing seems to be virtually unused. The ink tanks were empty so I drilled small holes in what seemed to be appropriate spots and injected some ink into them (Hobbicolors UW-8 for the colors and some Alotofthings pigment black that was made for HP carts in the black one) With a few purge cycles the thing was working and printing in surprisingly good color. The black nozzles seem to have some issues but hope prevails.