Ok, thanks, I didn't mention it but I did remove the filter and reverse flushed it with gas; I got a little bit of black residue washed out but was able to easily flow fuel through the filter, replaced and it didn't make any difference either. I haven't checked the fuel pressure yet either but that doesn't seem to fit the symptoms. I'll do that tonight.

I was hoping the key here was how much better it runs and idles when warm. Thought that might point to a specific component.

Randy