I sold my perfectly working 2013 SF848 with 2500 miles to a kid. He took out the baffle from the Remus exhaust (also has a Rexxer tune). Rode it maybe 300 miles over the winter and has had a hard time starting it. He lives a few miles from me and since the bike was sitting outside without a tender I offered him to bring it to me and I will charge the battery with my optimate charger. Battery charged and bike started eventually but then we could not start it again when he was ready to take it home. It just cranks. The fuel pump primes. I thought maybe the dreaded fuel hose/clamp issue is the culprit. I emptied the gas thank and used a borescope to look inside. Everything looks properly connected. Could the spark plugs be fouled with all the cranking??? What else am I missing? Mind you, it is no longer my bike but is stuck in my garage. I feel bad for the guy - I never ever had any issues with the bike. I have three kids and a demanding job so don't have a ton of time to fiddle around. Any help is appreciated.