I may do that Tomorrow and have it in the workshop just in case although it's showing scorchio for the week as long as I don't mention bbq and the Jim Clark.Getting them off is easy theres four short star screws inside bulged rounded hinged ends you can take them out and the whole outside bit comes off that’s the easy bit. If you look you will see four pre drilled holes you need long thin torque bit like a hex key get in there and remove the fixings that also separates the two plastic layers one is quite soft. I steeped them in a bath of soapy water for an hour then cleaned them. Just take your time quite fiddly