I tried to refill the LC 37 ink cartridges for my Brother DCP-150C. The instructions looked simple enough. So I managed to open the outer casing without too much damage. Used the tool supplied with the kit to make a hole. Stuck the syringe in and got covered in ink, the ink wasnt going in. I thought the tool might be too short so I got a little screwdriver form my toolbox and made a hole. The ink went in but not everywhere. I mean half the tank has ink but the part where the works are, where it contacts the printer, has nothing, just bubbles. Is this right? My old Cannon was easy but these cartridges look totally different inside, no sponge. I'm not much of a techie but I'm a bit peeved I can't figure this out. Can anyone advise. Some pix of what it's supposed to look like would be a help.