hey how ya goin?
im new to this site as of tonight, not sure if any one has replied to this yet but oh well,
the only other thing i can suggest is to make more room to get a 3/4 rattle gun in there, keep changing the direction so blast it in undo position the change direction, keep doing that, it is normal right hand thread, i'd say its very badly lock tighted or rusted on, maybe spray sum crc in there