you are correct on for number 4 but number 7 is wrong its jus oil sludge or dirt that is stuck in number 4 and also number 10 you jus have to clean it with break cleaner and the inside of 10 and to be on the safe side jus switch out number 4 with a new one. its called spool valve on the website hondaautomotiveparts but when it comes to our manual its the vtec solenoid valve.. mine went on last week then did the research coz at first i thought if it was bad but its not that bad. something you dont have to worry about but its a simple fix the good thing is i did find a video on youtube https://www.youtube.com/watch?v=4SBY0O8a8dw good luck bro hope this helps..
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