I have an 2004 Artic Cat DVX 400. Basically, I need help fixing it. I tore the entire thing down and restored it. Before I tore it down, it was running only when it was pop started. The valves were tapping. It only had 15 PSI for compression. So I replaced the valve head, the jug, the piston and the timing chain. I put it all back together, in time, and now it won't run at all. I've went through all the wires, checked all the grounds and checked the stater. All it does is smoke and burp out the carburetor. It sounds like something in the timing, but I've went through it over a dozen times. I'm lost. I can pull it down the road to try and pop start it and it won't even try to run. I have spark, I have fuel. This ain't my first rodeo. Please, anyone with good knowledge and knows what they're doing, I could really use a hand. You can also call or text 845-796-8351.