Ah, but that's what a deluded person would say.I am not deluded
The thing you're refusing to do is follow the guidance you've been given. Finding the cause of your system's symptoms is A Very Easy Thing when you understand how it works, so you have three choices:I just refuse to change a cylinder when it might not actually be needed.
1. Learn how it works, which people here will help you do;
2. Follow the guidance given on this topic;
3. Do nothing. You'd be surprised how many people do this.
Maybe you do appreciate them, but you seem to be ignoring them. At least I got your attention.I appreciate all of the comments from everyone apart from yourself, as they are constructive as opposed to yours which just seem to show a lack of understanding in this area.