weve 4 exmark walk behinds , they all have the adjustable front wheel heights that utilize re arrangement of washers . but when you re arrange the washers it tilts the deck upward or downward . so we dont like the deck sitting tilted and to adjust blade height we add or subtract washers above or below the blade on the spindle bolts under deck . this is how weve been functioning the entire 8 years ive been doing lawns , weve never asked anyone or read up on it . so im wondering if anyone could give me a quick education on the matter of setting the heights on the exmark walk behinds . the do's , the donts , the whys .