Excellent product but ....... 5

Hello,
Firstly a big thank you to Amazon exceptional site with which everything always runs perfectly.
Here are three months I use this yogurt maker. The design is nice.
As the operation I meet some minor annoyances: the recipe for cake with yogurt on the recipe indicates 20 minutes of cooking personally I have to put 40 minutes if cakes are cooked with baking cakes, dairy desserts (position 3) if I select more than 20 minutes I have to put water at least 1 time 2 times sometimes even if I'm 40 minutes which proves complicated because you have to remove the cover without putting water in the pots and then remove a hot pot, so burn, to put water in the proper cavity.
For the preparation of yoghurt: both located in the middle of the cavity do not take it remain liquid.
I returned my first yaourtière thinking there was a heating problem but the consideration received has the same concern.
Do you have the same concerns? Or am I the only one to meet these disadvantages.
Warning it sounds at end of cycle 8 hours for yoghurt, 16 hours to prepare the white cheese and petit-suisse, we must calculate so as not to hear in the night !!!!!
For pots, I use pots provided only for preparations requiring a drip (white cheese, petit suisse), for the rest I take glass jars kept on purchases of dairy desserts in the trade, which avoids to buy additional pots.
It remains that this yogurt with delicious desserts, yoghurts, cheeses and cakes.
The booklet contains recipes provided real delight for my little darlings (we are 5).