I have found some problems on the lowering spool and seat is worn so I wil get it fixed so it can seat corectly. And I will also replace all orings on lowering spool. Thanks for all the help and support DLTTrekkers
Now I have the lowering spool and seat fixed I polished the seat and spool with bit of grinding with a soft grinding stone. I got everything back and in and put lift back but stil same problem. With all new orings and spool and seat fixed.
I have found the problem the copper washer behind the seat of the non return valve had a litle crack in it looks fine when looking at it but I took a torch and put a litle heat to it and there it was a small crack. Replaced the washer and now my lift is working fine.