95 Disco 3.9L
Hay guys, finally got the radiator re-cored and the donut in the bin

, been off the tracks for few months now, l decided to take a run out to city view. Had a good run out there, temp sat firmly on half all the way there, i cained it through the hills to give it a good test and held well, but f*%# me, got there, let me tyres down, put it into low range and headed up the first hill and by the time i got to the first gate, approx 1km she was boiling.

I checked the fan and it was free wheeling (turned the car off, held the fan while someone started it and could hold the fan no probs) all while the electric fans were running full time, i'm guessing the viscus is stuffed???
So, turned around and went home, great trip yeh, got a credit off the park owner though which was good.
Pulled the one out of my 3.5l wreck when i got back, doesn't fit

, different size nut and left hand thread as opposed to right hand thread on mine.
WHAT TO DO
1 Do i buy a new viscus fan (lots of coin)
2 Do i fit twin thermos (pros and cons)
3 Do i have the existing viscus locked with screws, but ballanced???(2 or 3 screws in the shaft evenly spaced to lock and keep it ballanced) (but will have the fan running full time)
4 Do i have the viscus repaired??? (drilled and re-oiled)
What would you guys do? Any feed-back be much appreciated