the weirdest thing started happening on my jura e85. it was taking a long time to produce a single cup of coffee. the java would trickle out in small amounts. the cups that it made looked normal it was just frustrating waiting so long for a single cup. my wife and i recently had a small get together and it was embarrassing telling our guest to wait a little longer for their espresso. after that i knew i had to do something. after placing my order something else started happening. when trying to produce hot water, a sputtering show of water turned directly into steam. before it was a strong stream of hot water that we used to make tea and whatnot. i thought a few decalcifications would clean the machine with a few rinse cycles. that gave no noticeable improvement. there went lost money on tablets. once my tools arrived in about 2 days, i started taking apart the machine and was relieved to take out the oval screws without any problem. the key worked amazingly!!! it turns out that the sieve in the brewing unit was clogged with oily coffee grounds, sludge of some sort, and guess what - calcium. i guess the descales weren't doing much of anything at this point. i went to work - cleaning everything: brew unit and even behind the sieve. i also changed the two o-rings and then put it all back together. it wasn't as complicated as i imagined it to be. i thought i would have to send the jura to a local service dealer, but when i made our first cups of coffee after the repairs. my wife and I knew that repair was a success. thanks to these screwdrivers i will be looking forward to having a successful cup alone or with company over the house.