As some may remember, last week I posted the purchase of my first Speedmaster 3570.50 that i got from a forum member. A rattle was noticed and i found that the internal cover that holds down the movement was missing. A new one arrived this past Monday and upon having it properly installed, I find that the watch continues to gain well over a minute every 24 hours. I ask the seller to either give me a refund or to pay to have the watch calibrated. He tells me to be happy with my purchase and enjoy. I would appreciate any thoughts you fellow forum members might have regarding this matter. Thank you.