ADO A20 seems to come with non-metal folding pedals, couple reviewers showed that they had a fair bit of play in them. I'm heavy enough to have my own satellites, so would like to swap right away once bike arrives for a non-folding metal pair. Haven't been into bikes for years, I'm gathering there are a couple different types of spindles in bikes today? Any idea what I'm looking for in ADO A20 pedals?