Thru my entire experience of owning 3 different Vmaxes, it seems to be always an issue of how much oil to put in. We all know on hard acceleration, oil will slosh to the back of the motor, the sending unit is in front, (crap design) thus, oil lite on. My rule of thumb, and never ever has been a problem, fill the oil to the top of the site glass, run the bike to temp, let sit till cold, I mean cold, like to the next day! On the center stand to level it out, add oil to the top of the site glass, done. No oil lite during a hard pull, there is enough oil in it (unless your burning it) and enough space to control pressure variances unless your oil breather tube chamber is jacked up, like leaking which is a typical problem.. My thoughts, works for me and has been for yrs.