IIRC the Dewent had only one accessory drive so the generator was on the starboad and the hyraulic pump on the port engine. When you lowered the U/C the hyraulics took the line of least resistance and lowered the port wheel first.
With the early oval fin the airbrakes, fully extended, would blank off the fin and tailplane therefore not dampening the inevitable yaw and the nose would drop. The later, Mk 8 and similar, with a different fin didn't suffer so much.