motor mounting in an S2

[evilbert]

Cris has asked if i could post on his behalf as he can't access the computer right now..

he says that when building his S2 he had to file a small amount of the motor mounting plate to allow the mounting of the gearbox to the chassis, now he has come to put the motor in he can't get the screw holes to line up because he can't get the motor low enough...

is there something he is doing wrong or is this common... either way how do you get round this problem???