Fuel consumption issue
So at one point last December, I noticed that my gas light went on at 68 miles (normally I light up at around 130). Thinking this was a fluke, I filled up and parked the bike, only to have it taken out in its spot. This led to the bike being parked for about a month and a half.
Got it back on the road earlier this month, and this mileage issue is still around. Two more tanks lit up at ~70 miles. As usual, put in ~3.8 gallons to top off. Now something's definitely wrong.
I changed the plugs a few days ago to stock from iridiums (which included lifting the tank and looking around for leaks as someone suggested; nothing) and filled up. Last night the light went on at 48 miles.
It was a pretty sudden drop, so I'm sure it's not the air filter (was changed last summer). Should I be looking at the FPR? The bearings are in good shape.
Can someone suggest something? I've learned the hard way to have a KISS approach to this bike, but my regular mechanic dude is indefinitely MIA and I'm at a bit of a loss.