Thank you very mutch!

Yes, i will do that! But its going to take some time to get the hoses as i live in sweden! Got the wrong ones last time, so ended upp using the old ones just to get her running! You think that it can have to do with thd head gaskets, as you are refering to a leakdown test? Have had the plugs out to check if i got water into the cylinders while pressure testing! Dident really se anything exept that one plug was whiter than the rest! Got it down to bdc to se if there was water comming in with 1,5 bar, but couldent se any!? Got the heads milled down 0.10 when it was rebuild! So its straight! And have had them and the intake of, looking for leaks and changing gaskets! With the same resault!

Are any condensation in the valve covers normal for a 390 with pcv system?

Thank you very mutch for your help!