So im trying to remove my blower from my 2001 max and ive run into the infamous "allen bolt" behind the shoulderless idler pully. Im pretty sure it is rounded off and I can't get anything on it. Has anyone encountered this. It is in way too tight and I can not change my belt without removing it. Any help is appreciated. Thanks.

Ive got a 5mm hex socket with a wrench on the back which fits but i think that is too little too late.