 Welcome to BCH Technologies, today we're going to work on a customer's modified cartridge. The customer said that this cartridge works well and prints really well and we can insert it into the MX492 printer, however when we try to take it out for refill, it's really hard to take it out. He had to use suppliers. So we added ink and then we use a paper towel to wrap it and then use the household vacuum hose to suck the ink out and we still see the black is clogged so we use a priming clip to suck more ink until we can see the ink can flow out freely. Because it's a modified cover so we have to use the finger to push the cartridge down so we can have a tight seal and otherwise there won't be any vacuum to draw the ink out. We're putting a Canon PIXMA MG2525 and there's no problem putting it in. We had no problem putting it in or take it out so we wonder if it's because the customer is using a printer MX492 so we had to order a new printer and get delivered so we can test on the MX492. Because we have to wait the new printer to arrive, just be sure we took the original cover off and we install a new one ourselves. Just see if it will make a difference. Here's our brand new printer. Here's our sponge cartridge and then we took a good look with a sponge-less cartridge and tried to compare the difference. We never had any report from a sponge-less cartridge so we tried to put a sponge-less in first. There's no problem putting it in or take it out at all. The sponge one is a little bit harder to take it out and I will do a few more tries. I think we can reproduce the problem now and it's pretty hard to pull. This printer is a lot tighter than the other models and when you press it down you're supposed to hear a click. This one doesn't click and it's really hard to pull it. So again we look up and down and try to figure out what the problem is. If the sponge-less fits it really well, why not this one? Then we found that we have lots of glues on the bottom side of the cover because this model, this printer model is really really tight so just a little bit of glue will make it too thick for the printer to pull it out. Okay let's see how it works. Hear the click? That's easy.