Hello I have already had this Steam Mop twice, and each time it stopped working just under 1 month after the warranty expired (no more steam, probably the "steam drive" is broken), even though I used distilled water and decalcified it according to the instructions. Does it make sense to buy a warranty extension? I need it once a week, so I don't think a warranty extension will help, because they say it's normal wear and tear that's not covered by the warranty. I would like to buy another one now that the price is lower again.