Probs burning with pioneer 109 and sony Q30A

hi

the 2 dvd burners i have are so tempremental .
the pioneer 109 will burn at X6 and then i f i go to burn again it burns at X1.1 or not at all .

my sony burner will now just burn at X1.1 no matter what speed i select .
the sony is only 3 months old and it worked fine at first but it has just gone to burning at X1.1 now

please any help would be appreciated

many thanks

neil

The 109 wants to be MASTER and running in UDMA4 mode, connected to an 80 conductor IDE cable.

Enable DMA for both burner too.
http://www.blackmaxpc.com/Guides/Enable_DMA.htm