Change wiping water nozzles

Good late afternoon, have any of you ever had to replace the spray nozzles of the windscreen wiper system? I am facing a few small problems about this. First problem, from which (from the driver’s seat) right nozzle injects only water from the right hole, the left seems to be tight, I am already with a wire in it, but did not bring anything. But since it is all only a Euro spare part, I thought, can I use this small So look up the hood and look at it. Well, it’s all easier to imagine than it is. The bonnet is not just double screwed on the bottom, no, it’s welded. How do you change this thing now? You can’t get anything at all? Is there already a guide on the subject, because I couldn’t find anything! And another chubby question. How do you call this all now? Splash nozzle? Wash water nozzle? Wipe water nozzle? Benwischerdüse? I have no idea what I could look for at Ebay. I have also found the following offer on the Internet, but I don’t want to log on to third-party sites that bombard me with e-mail advertising:http://www.atu.de/…/ekat.html?… (Don’t be surprised, it’s talking about Calibra, but the part also seems to be compatible with Omega) Thank you already in advance!