Raising The Bar

What do you do when the cutting bar on your reel mower only raises to a two inch cutting height but you want to cut the grass at three inches? Make extensions!
HOW TO: Simply remove the adjustable plastic roller bar holders and cut some scrap lumber to the same dimensions, only longer. Drill out the holes for the roller bar axle. Next, set the mower to the desired height and mark the holes for the bolts. Then drill out the bolt holes and finally attach everything back.
After trying it out on the lawn, everything seemed to work fine. The increased blade angle caused the handle to stay higher but was still pushable. So that leads to my next question. Why would they tell us to cut the grass at three inches but sell a mower that only goes up to two? Do I have the wrong grass or wrong mower?