u/Many-Worldliness-817

Hey guys, I’m trying to fix my 2013 kx250f, and it had low ish compression, so I did a top end rebuild with a weisco piston, and got it back up to 90 psi. It still dosent want to start, and I’m beginning to think it’s related to timing. I recorded my valves along with my spark plug to try and see if the plug is firing at tdc, where the valves are facing outwards, and this is what I got. It looks, at least to me that the plug is firing when the valves are facing inwards? My flywheel has 2 marks on it, and I’m not sure which one to base the valves off of. Could this be the issue? Thanks!