I've made a couple of posts about this already. I'm looking for an SQ-AI to use for outdoor landscape etc. I've found one for sale and there's a few photos of it. one shows the back of the body where the film back attaches. The area around where the two tags on the film back slot into the body are quite worn. I'm wondering if this is a worrying thing or just normal wear and the seller been honest about the condition. any thoughts? Outwardly the rest of the camera looks clean and well looked after.