cam chain alignment

Hello everybody! I'm back with new issues :) So my engine was already apart so I figured, let's change the cam chain. That should be easy and I have already done it with some help.... Nope. I first tried to drive the chain with the current one. Didn't work out... I had to remove the cam shafts...

I am not very good at this. Here's my latest example and a question: I am (trying) to time my 1979 CM185 Twinstar. No matter what I do I can't get the points to open (and the light to go off) on F1, but I can get it on F2. I have recently taken the head off (among a bunch of other things)...