Apologies if you have already checked these , this is what I would check for in this situation, in this sequence:

Check Tyre pressures are correct
Shows the fault on a road with no camber ?
Check no brakes are not sticking on - i.e. will it roll easily on the level - I can roll mine with one hand out of gear ( just about )
Get the steering alignment checked at a reputable garage - might need alignment data from a Morgan dealer

As instant no brainers thats all I can think of - hope this helps.

Last edited by nippymog; 29/11/13 04:13 PM.