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I've heard that you should strive for at least 6". You'd be surprised how much tilt you can get on the nose just moving around a bit in many a campsite, or when entering and exiting fuel stations or dining establishments.
Look at your hitch, and see if you can raise the pin platform by moving it and re-bolting it to other holes.
Of course, that will likely raise the nose of the FW a bit. As long as you're not past about 3 degrees off level, it won't bother the fridge's functioning. But it will alter the weight loads on the trailer's tires a bit.
Is there a reason you have 20" wheels on the TV? And, you do still have tires with an "E" load rating, right?
Steve
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