I, am a total newb, but am doing my best to read posts and learn. However , I just bought a 2013 Honzo ST and it says it comes with a Roxshox Revelation RL fork 120mm. My question is 120mm the only travel I can get out of this as some forks are or can I adjust to make it 140mm. Thanks ahead for any info anybody can give. Also, is this a solo or dual air...whatever the hell that means. Thanks!!!