MX Simulator

Hello i'm Callum i've only had Mxs around 5 days and I can pin it around all tracks with arcade mode on but when I turn it off tbh I carnt even go in a straight line without falling off why is this??? I was wondering if this is to do with bike setup or is it just me I really would like some reply's to this so I can start playing the game properly because i'm getting bored of just pinning it around tracks with arcade mode on but I cannot pull wheelies or whip and i'm getting bored of trying to go in a straight line... If you could please repond to this it would help me alot and hopfully I can get some answers to why I am failing so bad lol
Many Thanks Callum

Oh sorry to bother you again but I was just wondering how I can get the MXS bike setup application I have download it I have it on my desktop but it just says program is not reponding many Thanks Callum

go to program files/ mxsimulatorsetupapplication and install the application in there, then try the set up application