570 Wont start. Valve Adjustment?

My wifes 2015 570 SP will not start. It has about 1400 miles, guessing about 80 hours. Had it out all day Saturday riding. No problems. Got it home and left it on the trailer over night with my and my buddys 570’s. Went to pull them off the trailer Sunday afternoon and hers would not start. It will turn over and I can smell gas and I got a little bit of a backfire a couple of times. But it would not fire. I started thinking about it and recall that I did have to give it a touch of throttle to get it started up and to keep it running till it warmed up a little the last few times I started it cold, but that did not help this time either.
Anyway, these are the same symptoms her 2013 500 had when it needed a valve adjustment. If this is the case, it seems a little more difficult of a job on the 570 than the 500. Has anyone taken it on? How was it? If I were to take it to the dealer does anyone have an idea of what they should be charging for the valve adjustment?
Thanks in advance for any info you can give me. And if you think it could be something other than the valves, I would love to hear your opinions.

570 Wont start. Valve Adjustment?

My wifes 2015 570 SP will not start. It has about 1400 miles, guessing about 80 hours. Had it out all day Saturday riding. No problems. Got it home and left it on the trailer over night with my and my buddys 570’s. Went to pull them off the trailer Sunday afternoon and hers would not start. It will turn over and I can smell gas and I got a little bit of a backfire a couple of times. But it would not fire. I started thinking about it and recall that I did have to give it a touch of throttle to get it started up and to keep it running till it warmed up a little the last few times I started it cold, but that did not help this time either.
Anyway, these are the same symptoms her 2013 500 had when it needed a valve adjustment. If this is the case, it seems a little more difficult of a job on the 570 than the 500. Has anyone taken it on? How was it? If I were to take it to the dealer does anyone have an idea of what they should be charging for the valve adjustment?
Thanks in advance for any info you can give me. And if you think it could be something other than the valves, I would love to hear your opinions.