Riding Lawn Mowers

1)I ordered at YT42DXLS which will arrive in several days. How many anti-scalp wheels does it have on the fabricated mower deck? If only 2, why does it not have rear anti-scalp wheels? I should think that rear anti-scalp wheels would help prevent scalping on hills as a portion of my mowing area has a fairly steep slope to it. Any strategies or suggestions to prevent or minimize scalping on the slope if the mower deck is equipped with 2 front-mounted anti-scalping wheels?

2) Are the anti-scalp wheels on the Husqvarna YT42DXLS fabricated mower deck adjustable? If so, are there pre-drilled holes to permit differing wheel positions so that they can be configured to be 1" above the ground at the desired mowing height of 3 inches in my case? The i" was suggested in one of the answers to a scalping issue question.