96 GTX fires but won't start

[intradev]

Combined two skis into one. Went with premix. Used it 2x. ISecond time was great, out for an hour taking it easy. Close to the ramp, I hammered it a little. Jumped a few wakes, nothing crazy. On the last wave, it quit. When home, I changed out entire ignition system just in case and it acts exactly the same. Spark is strong, and compression is 130 + in both, but it looks like only 1 cyl is firing. Also pulled intake off and looked at RV, it's still there and doesn't look problematic but I am no expert. Do I have one clogged carb? Did I shake up my tank and suck up some dirt?

Update-I have the gray lines.

 

[sunbaby69]

could be coil, stator, pick up.. are both cylinders getting good spark?

 

[intradev]

Thanks for answering after all this time.Problem appears to be ROTAX not spinning. I converted to premix without reading the directions so it looks like my ROTAX gear broke. I am going to price a gasket set and read up on changing it outfrom another lower end I have. Are you aware of what's involved? Am I better off getting a motor?