Been driving tractors with Lucas starters for about 30 years, - they are actually quite ok.
Have a 19 year old tractor outside (its never been housed) with a fully operable Lucas starter which has never failed!
However, when tractor manufacturer Massey-Ferguson switched from Lucas to an Italian manufacturer, all hell broke loose.
I have a 6 year old tractor with one of those, it's had about 13 overhauls and 2 or 3 replacements!
Maybe the Tornado had some Italian stuff?!?!?!?!:D