But the Saudis are also the biggest donors to the Madrassas from where these guys most likely are recruiting.
That is a very vague statement. Is the Saudi govt. funding madrassas? No
Did the Saudi govt. not hunt down Aq members like dogs and arrest/kill many of them? Yes
Did they not break of diplomatic relations with the Taliban because they sheltered OBL back in in 1999? Yes
Fact of the matter is that AQ was and is anti-Saudi govt. and if you have been following what the SAG is doing in this regard, you would know that they have been tackling AQ militants both ideologically as well as militarily much more effectively than Pakistan.