get a breaker bar. I picked one up at scotties for about $8 its 1.5 thick and about 5 feet long galvanized steel and the walls are about 1/2 thick. Ive never had anything that this bar wouldnt break. Ive used impact guns the size of a 13 wheel hooked up to 15hp industrial air compressors that wouldnt get bolts off put this bar on there and with minimal force damn near any bolt will either come off or something is gonna break either the socket ratchet or bolt head. I suggest at least 1/2 inch sockets 3/8 doesnt always cut it.
Robster