Agreed with so few bolts so low a torque I just worked centre out. However if your covers are still stuck firm you will probably have to give a little effort to remove them. They are quite rigid and the removal and re fit was no worry whatsoever.
I can only emphasise removing all the old sealer is important, use a good brand of sealer and do not even start the engine for 24hrs to allow full cure time.
500 miles hot drive so far with no trace of a leak. Should do 2000 mile plus before the end of September I'll report back ��