Thanks for all the tips
I've learned a couple of things here................
Firstly, I also have an R1150RS and have always needed to use the fast idle lever - it needs it for the first few minutes, otherwise it's very likely to stall on me.
But it turns out that it isn't the case for the R1100S - as you said Rob, the R1100S just needs a few blips of the throttle and then it idles OK.
I just assumed it would need the fast idle lever like the R1150RS does.
Think the reason might be that while my R1150RS is law abidingly tuned to meet the Euro 2 emissions regulations, my R1100S has been de-catted and fitted with some replacement fuelling chip. Result is a better running engine that apparently doesn't need that fast idle lever.
The other thing I learned is that the R1100S (and probably the R1150RS) has a fuel filter..... which needs to be changed........
Didn't notice it in the maintenance schedules.
Sounds like a pain to replace - wonder if I can get away with it for a while on a 32,000 mile bike?