Hello all. Newbie here with a question about the Schwinn Sanctuary 7. Are the pedal threads all standard on these or all bikes? I just purchased a new Sanctuary 7 from Amazon (about $310) and just received it this week. Upon assembly, I noticed the pedals seem very cheaply made, a plastic-like material. Because I'm not a small guy, I thought I'd upgrade to an alloy material pedal set off Amazon, but I wanted to make sure they will fit my bicycle. They say they are 9/16" thread? Everything on this bike on assembly is metric, so I'm sceptical. Thanks in advance.