Onan carburetor float has fuel inside of float

Only suggestion I have, look among shops that are tinkerers, that keep old parts hoping they can cannibalize them. Or a shop that replaces them with new. Again, carb "cores" that might be plugged up, but a few would have good floats. Those engines aren't only on gensets, at least I don't think so. Seen ONAN engines on welders, some small equipment, might be on marine gensets also.