Blenheim Mk IV pilots,please help

[Plt Off JRB Meaker]

Getting to grips with flying this Blenheim on CEM now and have got it sussed,I think,but I'm still not there 100%.

On take off,once both my engines are up to speed and my oil temps have reached about 40c,I start to make my run down the runway,slowly at first then biulding up the power but keeping her straight is a nightmare,she just want's to veer right all the time,please,where am I going wrong?

I have my foot firmly on the left rudder trying to keep her straight,but she insists on turning right.I just don't get it,I have ensured both engines are running at the same,equal RPM,have tried adding in trim but she still heads to starboard,it's doing my head in,lol