Had a very nice conversation with Mulfab and the radiator will probably be shipped tomorow!
As suggested, I have not ordered a new fan and will use the standard one.
Now I hope, it will be delivered soon! Nowadays it is a little adventure to order from the UK. You can get in one week... or in six weeks. Or you´re not getting it at all. So fingers crossed!!!
And thank you again for your support!
