The chain wheel guard on my '74 Schwinn Super Sport is a little bent and I am wondering if anyone knows the best place to buy a new one. The bend isnt bad, the bike is still ridable, but, it rubs up against the front derailer and makes this sound that just drives me crazy because it seems like the one imperfection remaining in an otherwise beautiful bike.

Also, does anyone have any pedal advice? Should I get a 1/2" to 9/16" in converter or just by 1/2" in pedals?

Thanks for the help.

(In case I am confused, I'm under the impression that the chain rear guard is the metal disk attached to the two sets of gears on the front crank that prevents the chain from going past the large ring)