High idle when warm

[crx92ie]

Hey lads, hope someone is still around these parts (the lights were on so I decided to stroll in)! Having an issue with high idle on the siR, when the car is warm it's idling at 1200-1500 rpm. If I leave it late to press the clutch when stopping, so that the revs drop below this level, the idle will hold at the lower rate, but the norm is slightly above what it should as mentioned above. There's no hunting going on, just slightly idling. It does seem to be slightly high on cold startup, too, but still under 2000RPM. The engine then appears to heat up normally. Any advice welcome.