What are the pros and cons of idle bars. I'm having a little bit of a prob getting a OS SF 46( non-ringed) to go from fast idle to wfo. This was a motor I bought from an individual, was gummed up real bad. Complete tear down, everything looks great, really good compression, starts great. Just wondering if idle bars make it more difficult to set-up.
Yes, I am new to this, but am a very capable mechanic.

Whats ya'll thoughts? Thanks inadvance for all info.[8D]