Tune-up

Betty (as suggested by goldfish) in another thread runs a little rough during idling, I'm trying to track down the problem(s). Well The car was idling really nasty and I checked for vacuum leaks. I found the carb was not even bolted down (hand tight, barely) from the time it went to a shop. That made it a little better. So then I check the heat sensor and it is bad. I gotta get on that. So Finally I flip through the owners manual for some info and I read the spark plug section. It said that bad plugs will cuase a rough idle. So I pulled out the plugs and they were brown and some were rusty, the gaps were different on each plug.

Info:

225 CID L6
54,360 miles
lash is good
fresh oil & filter
new fuel pump
Original coil, dist, and wires
550 RPM in Drive
Ign Timing 5 degrees BTDC
new fuel pump

Also what is the torque specs for a plug on the 225? Not in the FSM, at least that I can find...