i'm not sure if its the same on my 89 vit, but there are 4 bolts from the bottom up that hold my tank, all 4 have captive nuts. i never had a skid plate on mine, nor have i seen one here with a skid.
anyway, when i got my vit, one of the return or breather tubes which go into the tank broke loose. hoses were all still good, and all connected, but the actual metal pip that goes front the hose, does a 90* and into the tank was loose. everytime i filled up, i'd have fuel leak and smell.
i had to drop my tank, drain it, wash it out, and then braze weld the tube back in. was kinda scary using the oxy on my tank.
i think the best way to find out, is to drop the tank.
and i was going to say, if you had a body lift, 3", now would be a good time to lift the tank, seeing as you'll probably break the other 3 bolts getting it off.