That is about where I run my LSN and my car only idles high for probably less than 2 seconds after a very hard run. It sounds like you could use a little more fuel on the bottom and lean the top some more, although I don't tune by temperature so I don't know what your reading relates to so the top end is all up to you if the engine is producing smoke and never feels overheated (boggy) then try a bit. These engines have a small window on the HSN to produce insane amounts of power and you might be just short of it.