[GaryMcQ]

I agree with Wesley. I would make a full backup with SPB Backup before doing anything. Then go ahead and Task 29 and flash the new ROM. At least you can look at and see if you want to go ahead and do another rebuild. THEN, if you decide there is not enough change or improvement and don't want to take the time for a re-build, Task 29 again, flash the same version of ROM that is on your backup, then restore the backup over that.
I have used this method every time I get the flash urge, or just the urge to go look at what the other chef's are doing. So far, I've never been bitten by doing it this way.
Good luck,
GMc