No, Can't figure out your speeling.
If I get you correctly, the clutch on your 1200 did not work so you put in the clutch from your 1250; Was too stiff, so you removed a disc. Now clutch slips badly.
Am I right on that so far?
Don't know what that has to do with your right front spring or shock.
Could you have fried the clutch disks? Yes. As I am not there to check it out first hand, couldn't tell you on the clutch.
Does the clutch have an effect on your spring or shock combo? No.
How the clutch hooks up with the spring and shock combo; Yes.
Clutch slippage is likely not a good thing. Will cause you to lose momentum. Spring and shock combo help with the attitude of the car. Clutch slippage could make the car feel loose or tight, depending on track conditions.
Can you blame the jam nut coming loose because of clutch slippage? Not likely.
Do you do regular checks on your nuts and bolts? Do you safety wire suspension components?
Hard to say why your shock came loose. But, not likely that it was clutch related.
If you can explain further, and please use your spell checker, perhaps I can get a better understanding of the situation.
Sorry that I may not be of more help.
Steve