Neville, toilet rolls, problem, especially if you have a cat!!!.
3 screws at the stern, 1 central 2 at the corners under bollards, leaver up with thin screwdriver.
1 each side of the rear deck hatch.
1 each side opposite the cabin rear hold down bollards screw fitted in inboard side of each one.
1 each side rear of the forward hatch.
1 each side forward hatch, again hidden by bollard screw from side.
3 in the bow area.
PS all screws in the deck are under small plastic plugs, be gentle with them as you want to put them back to seal the deck again.
You should have 14 screws now, the deck is sealed with a gasket, 'O' ring, and what seems like Vaseline, and splits at the rubbing strip just behind the tyre fenders, might need a bit of a pull, going round the hull as you go. Once the deck is off, it is all in front of you.
Looking down into the hull, there is a black battery plate, held down with 4 screws, the receiver and the on/off switch.
I have kept the plate, but cutaway the dividing 'walls' was needed, for the new receiver etc to fit.
It is not big enough for the buggy type battery, so i glued a thin platform on top for the battery to sit on. Battery is held with self
adhesive
velcro pads to keep it in place.
'Central hull' is the motors and gearbox, follow the long Red and Black wires back to the receiver and cut them as close to the receiver as you can, ready to wire into the ESC, i used a 'chocolate' block, 10ah.
Stearn is the servo and steering linkage, nothing needed here just a smear of grease to lubricate. A couple of drops of oil on the ends of the propshaft won't go amiss.
'Battery position', i have mine on the radio plate, but with care and a little trimming you can fit it across the hull, above the propshafts, or with care between the propshafts, fore and aft. Make sure there is a side plate fitted to stop the battery fouling the rudder servo.
Hope this is clear, don't force the deck be gentle
Mark