No idea whether you had or not. Without the cap it’s not possible thru the fender unless you want to make a mess . A couple things doing it from the top , to start taking things apart , the other big thing leaning over , and getting that filter to go on . I read about thru the fender with the Geno cap , hated doing it thru the top , was hoping thru the fender would be easier , and it was with the cap , never looked back .
What you gentleman don’t realize going thru the fender is that filter goes straight up one handed, has no place to go but where it’s supposed to , you can feel the threaded stud center itself , jus a matter having it straight in order to screw it back on . I’ll say it once more , you haven’t done that way , I have . If it we’re easier thru the top I would do it that way , I don’t know how much more understandable I can make it .