Share 'Standing in a Ride 135'

I have recently bought a ride 135 and am enjoying it.  I can stand and am getting more comfortable while doing so, and sitting it feels so solid i have no worries. my stats: 6'4 300lbs My only prob is this.  I have knee issues and am not quite as flexible as some due to some injuries overseas.  Be cause of this i cannot go from sitting to standing as of yet.  I am trying to figure out a way, bu…