I couldn't decide whether to post this is DIY or here. There seems to be some overlap. Anyway, after scouring the internet, I haven't found any reliable information on how to check (test) the focal plane shutter on a Pacemaker Speed, or even where to have it done for that matter. I have found some DIY service info, but nothing that looks like a reliable way to find out what my shutter speeds really are. Thank you.