I'm running a 1991 Hymer camp on a Fiat Ducato 2.5D. Never blessed with a huge amount of power, I'm finding that I'm really struggling to get up inclines and keep up in traffic and she's all out of ideas at 50mph - 55 downhill with the wind behind. any suggestions on how I can get her balanced up right to give me a touch more power. Or am I flogging a dead horse, as it were. Cheers!