Alcohol problem



Ok when burning .mds and bin cue i have a problem, i can burn most at 40x and others will not burn unless i set it to 8x, some are 16x… now using the trial i have this issue, i tried a full version from a friend and it wont work, i love a120% and want the full version but i cannot figure this out.

I have used different types of media and diff firmware, I have a Liteon 401s flashed to a 411s, was having issue with un changed firmware. This is a clean install of xp sp2. anyone have any suggestions?
ps the disc burns and goes through the process but there is not any data on the disc, some are coasters others are still blank and can be used again only happens with alcohol