Unfortunately, my two different lot numbers were sent, only 14 316 and 13 175, which is why the processing is very complicating. If I had not had such a capable publisher, I was desperate, because it had to be considerably reworked with drilling and screwing, which actually was not the whole point of the thing. The laying period has more than doubled !! If you would send me a free maintenance oil as a "consolation prize", I would find that a nice touch.