I build a lot of bike engines and have done a few car ones too and always start them up, let them gently get up to working temp while doing the timing etc then let them cool off before a long running in period. I'm just about (well...soon) to put this TBI motor in my truck. Cam manufacturers say to fire it up and run it at at least 2000rpm for half an hour to bed the cam in. I hate the idea of this. So I want your opinions. Who has not followed this procedure and not had any problems...or has had problems. I think I'd rather risk my cam than my crank or bores! What do y'all think?