I would like to have a few more inches above the grain cart. After considering taller tires than the 24.5.32's that are on there now I read in manual that a 1666 has adjustable finals depending on size of tires. they are in the "shorter" height position now. I was wondering if I moved the finals down on the axle would it make them weaker with grain tank extensions,6r30corn head 20'1020gh with the 24.5 tires. manual says they are suppose to be in that position with 23,or28L26 tires. And does anybody know how much more height this will get me? I know that feeder and rear axle adjustments will be required also.