This score is nothing special but it shows the trench run in later levels... I haven't seen such video on Youtube before.
I compensated the increased difficulty between yoke and mouse by adding 3 extra shields after completing the level from the dip switch settings.
I was able to score over 30 million in the arcade machine but I simply can't get same kind of precision from a mouse, no matter how much I play with the MAME analog settings. The towers pose a problem with the mouse (for me), not the trench run which is pretty much always the same combo of levels 8, 9 and 10.
This game is one of my all time favorite arcades.
Use 480pt (HQ resolution). Otherwise the video looks really bad.