RWS TO6 34, front sight removal?

One horizontal set screw at rear of hood removes the hooded fiber optic from ramp. Vertical sets crew removed ramp which slides off end of barrel. There’s a bevel cut into end of Barrel to keep ramp in the right orientation so ramp won’t turn if you twist it. Once ramp screw is loosened or removed ramp should slide off. Try the oil if it doesn’t