I have an old President Washington that my dad bought back in the 70's. I used to use it alot back in the late 90's but hasn't been used in a long time. I got it out just for giggles and it still works. The only problem I see is when a real strong signal hits it it really squeals,drowning out whoever's talking,unless I turn the RF gain down. I take it's just being overloaded,how can this be fixed other than knocking down the receive?