Hi xkeithr , well i try to this with my trial 60 days version DSSV6 up30 b4362(32bit)
and try to change the MaxOutstandingR2T
from console mode ( CTRL+ALT+W> Tunining option>iSCSI deamon option> Target option ( select my target)>MaxOutstandingR2T .

i try to change it but it keep came back to 1 .

i try to use DSSV6 older build (up14) , and it go great i change it and it work .
and then i try to use the build up30 b4362 ( keeping the changes that i have done with the older build , and when i run with new build up30 , the old changes keep

to say it more easy :
use the old build up14 , change MaxOutstandingR2T value =2 ( and for my other volume to value=3 )
then restart with new build up30 , go to MaxOutstandingR2T , and the values still 2 and 3
but when i try to change them again ( in up30) to let say value 4 , it changed to 1.