here's the best I can do for you
go to my website:
http://www.thescottthuneseffect.com
a news story near the top has a link to some guy's thesis on Zappa's melodies... it's a pdf which has the majority of Black Page #1... and it must be the official barfko swill version because the infamous bar 15 is wrong
if you need Black Page bass parts, there's a couple of the 80's versions of #2 (1984 and 1988) on my site in notation too:
http://thescottthuneseffect.com/ycdtosa4_black_page.php http://thescottthuneseffect.com/majnh_black_page.php
if it's Patrick O'hearn's bass part for #1 you're looking for, I don't think it's out there in any form, but i'm sure we could figure it out between us.. it's only a few simple polyrhythms
The Black Page 
