Just brewed my second beer tonight (AG). For my first beer last week my target gravity was 1.053, my OG was 1.052. Tonight my target was 1.057, and my OG came out at... 1.052 (again). The only thing i did different was the mash temp; the first beer i mashed at 154, and this one i mashed at 152. My Hydrometer came in a kit i bought second hand, i didnt realize the flimsy plastic base had a pin size hole in it, which makes me wonder about the hydrometer itself. Maybe im trying to explain and blame my problem away, but WHAT GIVES?! Is there a remote possibility my hydrometer is faulty? Should i just shoot for 154 in the future?