Knocking Through Foot Pegs

[darrsi]

I had a similar problem, one seized link, ending up putting on a new chain.
No matter what I tired could not get it to free up.

All it takes is that one link, which will seize at a slight angle going from bottom left up to top right as you look at the lower level of the chain, and every time it hits the front sprocket you'll feel it as a bump on your left foot.
It should be quite obvious to see compared to all the other horizontal links, and if you see a suspect link then use pliers and see if it moves freely like the rest of the chain links.
Once you've sussed out what you're looking out for they will stand out to you quite obviously in the future!