Probably not, I have noticed on our cart (2017) that you cannot actually fill the tank unless you are very good at controlling the flow. I would not worry about the full indication you need to worry about the empty indication. As I recall the tank holds 5 gallons, so watch your gauge, and when it gets close to E, fill the tank and take note of the amount of gas, this will give you an idea of the accuracy.
One other thought, ask a neighbor if you can borrow their gauge for a couple of minutes and install it in your cart see if you get the same reading. It may be possible that the float on your gauge has a small leak and there is some gas in the float which could cause a low reading.
Replacement gauges run around $30 last time I checked.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV.
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