Hi folks, Today I sent off my M6 TTL to Malcolm Taylor in the UK. I noticed the meter was underexposing by around 2 stops. I'm just wondering if any of you have experienced this fault before and what the outcome was. Batteries are new, no corrosion in the battery chamber or on the contacts under the rear flap. I also whirled the ISO dial around a few times in case there was some corrosion under there. Any ideas?