Patience is a virtue when building a model railway. Back in November I ballasted the track, but unfortunately when it came to the level crossing, the diluted PVA glue ran down the holes where the rods, which operate the gates, from the servos came through the baseboard, and glued up the servos! I have left it till now to mull it over as to how to fix it. over the last 3 days I removed the gates from the operating rods, took out the glued up servos, removed the operating rods from the old servos and super-glued them into the new servos. Refitted the new servos, super-glued one of the gates to its operating rod, set up the electronic control board to move the gate accurately between the open and closed positions, then super-glued the other gate to its operating rod. All working perfectly now, just needs the gates repainting over the new glue.
Keith.