I'm not worried about that seal and the work... Can do the whole job in less than an hour. With the wide open race motor compartments I can do a clutch pull and replace in 2 hours by myself.
My biggest concern was the o-ring. I was VERY careful not to pinch it and lubed it well, but of course, since that's the worst case scenario I started worrying. I'll replace the FMS today and see what happens.
This is just lowering the back half of the motor... No biggie..