Sounds more like the 806 Mb is one CD, and the 37Mb is a second CD.
Depending on the standard, and degree of compliance required, the answer may be aim for a smidge more compression (lowering video or audio bitrate), or select a 90 minute media ... 3 1/2 minutes - I wouldn't bank on overburning an 80 min by more than about 2 minutes, unless it is a known good overburning media.
The alternative, is to raise the bitrate/quality (if possible) until it fills more of 2 CDs - or adjust the destination media size to make the cut at a more even position - still guessing as to the placement, so difficult to drop it on a natural break.