Got some questions about my 400 here. First off, it’s bored to a 440, has stage 2 hotcam, jetted, air filter mods, and white bros e series. A few other small things but that’s just about the majority of the serious things. I had to do a one way bearing for the starter, or as some call it a starter clutch, so she sat for a while as I waited for parts (about 3 weeks). Now, I put the one way bearing in, sealed everything up, and she won’t fire. So, I take her apart. Everything seems fine valve wise, none are stuck or anything, hasn’t jumped timing, but I get to the piston and it’s covered in oil and grime like dirt. Physical chunks of really oily grimey substance. So, I clean everything off and throw her back together, timing seems good, but I notice that I can’t get it exactly perfect. With the tensioner hand tight, flywheel perfectly at top dead, the can gear shows a bit ahead, so, I take the chain and bring it one ahead, but now it’s too far the opposite way at top dead. It’s like I’m half a tooth out. Now, I don’t think it would cause it not to start, but it’s a concern because it’s never been like that, and this spring I did valves, chain, and top sprocket, so it should be good. She ran great before, and won’t even fire off of ether down the cylinder. I took it apart and rebuilt it 3x, still to no prevail. She’s getting spark, I’m feeding her fuel and air, so my main concern is the timing just being a tad out. I readjusted the valves 2x, messed with the chain countless times back and forth, removed flywheel again and retorqued and redid the key, and she seems like she has compression. What are some thoughts? sorry for the stupid long question, but I just want to give as much detail so I’m not getting 9 year olds telling me to “clean my carb” or “try 2 taps of the throttle when you crank works perfect on my 1976 go cart”. Thanks guys!