Only ever flew the WS55 Series 3 civil version with the Gnome, on floats. Based in Abu Dhabi it was a bit of a struggle to get eight or nine big Americans off the ground sometimes in summer! We flew with the fuel computer out most of the time, there had been a few 'freezes' followed by at least two 'mis-matches' when selecting manual, possibly a rogue batch or just a transient fault. These days computers are so much more reliable!
Gave me high tone deafness too, not the engine but the gear box!