Hello together maybe one of you can help me. I have a Yamaha YZF 1000 R built in 1997 and am doing a big maintenance (change valve shaft seals, grind in valves etc.) I have a problem now which I can’t explain to myself. I don’t get the first part of the cylinder head off. Screws are all solved/removed and also seems to want to get out but it hacks or it jams somewhere. I don’t want to pull out now with violence. There’s nothing in the workshop manual that helps me. I once added a picture from the internet so you know which part of the cylinder head I mean (marked red).