Another timing curve question

Yes, there is quite a lope (probably would just call it "Rough idle" like a lot of cam charts) ;)
That was my plan (for the weight to stay firmly against the loop of the heavy spring). If it ever drops to 800 something is wrong... It does idle best at 1100, maybe as low as 1000 if I can get it stable enough.

Definitely it'd be easiest to just try the very light spring(s) so it's full advance once the engine starts. But it can get quite hot here in southern MO and I don't want to ping the crap out of my pistons while cruising around town. I have a dash-mounted retard unit so I could twiddle if needed, but I really want to make this as simple as possible and not requiring constant attention to knobs like I'm playing a pipe organ :rolleyes: