Vehicle Damage, Space Marines, Orks

Seems like a dumb question to me but my roomate wants some clarification. On a Glancing hit you roll for damage and then -2 and then +1 for AP1 weaponry, his argument is that if he rolls a 2 and the chart stops at 1 then 2 - 2 = 1 and +1 = 2, stunned. My belief is that the wording in the rule book is "on a 1 or less" count as shaken. so 2 - 2 + 1 = 1, which is shaken. And if he rolled a 1 then 1 -2 + 1 = 0 which is 1 or less, so shaken again...


Now for a serious rules question, can a space marine librarian teleport (blink or whatever it's called) use homing beacons? because apprently (I don't have the codex) they arrive via deepstrike, and homing beacons stop deepstrikes from scattering, so could the librarian safely teleport his squad to homing beacons?

Third question, for Orks, Ghazkull's waaaagh replaces the normal waaagh so the orks still only get one waaagh if they have ghaz? or do they get 2? (mostly wishful thinking) If it's only one then my appologies to Robyn, I've always thought they get 2 but someone recently told me they still only get 1 they just use ghaz's because it's better.