I just took possession of my new Exmark Metro, it's belt driven and fixed deck, my first "bigger" mower. It came from the dealer set at 2 1/2 inch cutting height. They said I can achieve higher or lower levels of cutting height by simply adjusting the front spacers on the 2 front casters, without having to adjust the rear or blade spacers. Does anyone have experience in this to let me know if it will get a good cut using this method? The grass cutting height here is an average of 2.5 to 3.5 inches.