2005 DS650X Won’t Start

Hey guys. I’m pulling my hair out with this issue. I have a 2005 DS650X and neither my mechanic nor can I get it started. It ran perfect last year and this year it just won’t start. Here are the facts and what we’ve done to try and solve the issue:
1) Nice blue spark firing on every stroke
2) 150 compression
3) Cleaned carb thoroughly and adjusted accurately
4) New fuel
5) Timing has been reset and is right on
6) Key way pin has been checked and is in perfect condition
7) Used gas spray bottle to the carb and still isn’t firing
8) Has the odd backfire while cranking over
9) Gap between the trigger coil and guide piece is accurate
My machine is completely stock. Any recommendations?

2005 DS650X Won’t Start

Hey guys. I’m pulling my hair out with this issue. I have a 2005 DS650X and neither my mechanic nor can I get it started. It ran perfect last year and this year it just won’t start. Here are the facts and what we’ve done to try and solve the issue:
1) Nice blue spark firing on every stroke
2) 150 compression
3) Cleaned carb thoroughly and adjusted accurately
4) New fuel
5) Timing has been reset and is right on
6) Key way pin has been checked and is in perfect condition
7) Used gas spray bottle to the carb and still isn’t firing
8) Has the odd backfire while cranking over
9) Gap between the trigger coil and guide piece is accurate
My machine is completely stock. Any recommendations?