48 x disks, nero and a btc writer

[2307]

hi , i have a minor problem whit burning cd's , i have a btc 32/10/40 , i use nero and stomp , the problem is when i burn whit nero , the max speed i can set is 16 X while using 48 x cd's , i tryd the cd's on a mate's writer (plextor) and he can burn @ 48 x whitout troubles , when i use stomp , i can select a higher speed , buth the burning take's aslong as whit nero , anyone now what the prob could be ?? tryd another brand of cd's to , many other's , buth it's still the same

win 2k sp3
dma enabled


thx in advance