Idle control Valve (prefacelift)

Hi All
My cold start idle is getting a bit worse, lumpy running and sometimes fluctuating revs and a cut out, when it's warm much better, but get an occasional low idle and cut out.

I want to take out and clean the ICV, is the procedure, air filter housing off, 2 screws (hopefully they come out ok), then clean it with brake cleaner, is that correct?

Thanks
 
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