[Farmall] F12 Timing

[kevin hood]

I was checking my timing on my F12 because sometimes it wants to kick back 
when starting. The points appear to open after TDC, but I think the mag is 
180 degrees out. The impulse trips when #2 & #3 pistons are at the top. The 
tractor runs good once it starts. Is this a problem?

Thanks,
    Kevin Hood