My 350f idles around 1100 when warmed up. It has a slight skip which I think is due to a bent advancer shaft per HondaMan's analysis a while back. It sounds like garbage when it is cold though, and I do not idle it below 1500 or so until it warms up. By "garbage" I mean that it makes nasty clanking sounds inside the engine as cylinder fight each other.
Before setting my mixture screws, it idled erratically between 1100 and 1800 rpm.
Before replacing the points, it idled poorly and would often die, if I did not have it set around 1500.
Before replacing the 2/3 condenser, it would skip worse at idle, and became a 175 twin last night 30 miles from home on Highway 1. After replacing the condenser, it runs even better than before, but still with the slight skip.
With the timing off by a couple degrees between points, it would make an awful racket and not idle at all well until the rpm were above 1500.
Not sure why I wrote all that, but there you go.
Camelman