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Fuel system questions

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Randy

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Mighty cold here for the next 3 days so I thought I would spend some quality time in the house with you guys and get a couple irritating questions answered.

1) I needed to reduce a tubing size so I installed an AN894 flared tube reducer onto an AN816. It bottomed out without getting tight. I inserted a Del 37 degree seal into the reducer and tried again, same thing, bottomed out before getting tight. I ordered the correct fitting size so I am fine now but what was my problem in case I run into it again ?

2) I have a 3/8" I.D. clear tube for a fuel sight gauge in the cockpit. I ordered a Piper fuel float ball to insert into the tube to make the fuel level easier to read. There was no size listed on the float ball description so I just "assumed" it would work. It is .275 diameter, so small it goes right through my AN fittings. I will "assume" again that this is the only size this float comes in so the question, any suggestions on making my fuel level easier to read ? I have seen things like painting a 'barber pole' on the panel. Really don't have much room for that but as a last resort . . . .
Thank you,
 

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