LH-18A1H DVD-R huge-arse lead-in issue....again

vbimport

#1

when i try to burn two disc(MID:OPTODISCR004) with LH-18A1H(HL07) and Optiarc AD-5170(1.11)

Optiarc burnning fine…didn’t have large Gap.

With LH-18A1H the DVD-R lead-in issue again…large Gap.
and say it’s Blank Disc.

how to fix this ?