I think you'll find it is all down to the owner's not listening actually Smit . When there is a problem and they ask what to do (this is BOTH of them ) and get told, "Get it sorted before you abuse it any more, or it WILL melt!" - what do they do? Continue to rag the shit out of it and then bleat about shitty Cossie reliability when it blows up .

Dom,
If you want my HONEST advice, repair it NOW (before it get's worse, as cars don't like standing idle), but get it done properly and running four greys with T4. It will actually be MORE reliable than the T3/4 conversion and you "may" get away without transmission mods IF you don't go launching it. This is because the boost doesn't come in aggressively low down and gives the transmission an easier time. Harvey does a fantastic T4 conversion (425bhp) ideal for your car.