Slow to come down to idle when warm / hot

[oneyunguy]

Any ideas on why this may be happening? Its a normal, usual thing with this bike for the past two seasons.
Takes about 5 - 10 seconds to slowly come down to normal put..put..put..put.

oh, on a side note, I think I remember previous posts about this but, I find it hard to get into first after stopping, say at a red light.