Right. Having checked every possible  reason for my 1330 running warmer
than desired i've decided to flush the system. The radiator is new so i
was thinking of removing it and simply flush the block and head. My
question is:
1) which way do i flush it? (remove thermostat?, reverse flush?, open
drain plug at rear?)
2)Any effective products out there to remove some of the rust buld up
in the cooloant jacket?
Would the water pump prevent any significant sludge from escaping the
system if i reverse flushed it?

In other words if anybody has done this before and please enlighten me

Thanks