First, iīm not a dev.
I have only a little bit knowing in ext Partitions for Android ( i have an old g1 too )
All that i described is working.
Ext2 and ext3 are nearly the same with only few differences.
Try it with naked version of Beta0 with only gapps installed.
AND YES, ITīS FASTER WITH IT !
Many people told me that it really works by pm;
Page 6, User Me4mario:
"Well, although CWM apparently isn't the best choise, I pumped my Quadrant score:
From: - 600 mhz Ondemand -> Score: ~530
-806 mhz Performance -> Score: ~640
To: - 600 mhz Ondemand -> Score: ~940
-806 mhz Performance -> Score: ~1140
So, again, Thank you (very much)!"