2 accs - powerleveling

Hi there,

So I just recently got a second account and wanted to level an alt for enchanting... Now I brought my lvl 20 hunter along and added them into a group. But to my suprise my alt only got like 6 xp/kill am I doing something wrong or did blizz change something? This way I'd be faster playing my alt alone than pulling him with my hunter? Also I suppose I can't bring him along with my lvl 20 and just play "Normal"?

Any help/tips would be apreciated.

PS: Also, what lvl would my alt need to disenchant/enchant all items?