Only time use Shimano, was when they come with the bike. I always use either, Shram, Sachs, or Nashbar with the master link, but I would like to be able to put the pin back in the chain, as the master links are pricey compared to the chain ~ $5 ea.

So, what is the best way to get the pin back in, center so that it can handle the load / stress of the bike?