It doesnt work with covers, sadly. My setup doesnt use any GT pipes anymore, those are to buggy:
https://i.imgur.com/VFmDA2t.jpg
https://i.imgur.com/RBfw64u.jpg
The turbines now work at full power output, also theri input hatches arent filling up, so it seems that they work perfectly with 40000mb/s each as it should. But why do i get to much steam and have a loss of distilled water?
Are you using a regulator on the LHE input? If the last LHE output hatch fills up it voids steam.