How easy or hard is it to change the timing belt on a Citroen Synergie ?

Are there any specialist tools required . How easy or hard is it to change the timing belt on a Citroen Synergie ?you do req timing pin tools to locate and hold camshaft crankshaft and fuel pump and the crank pulley bolt is v tight u can use long 8 mm bolts to locate your timing gears i do but your flywheel locating tool should be hardened steel will push in to flywheel the rest screw inHow easy or hard is it to change the timing belt on a Citroen Synergie ?Its easy if you're skilled and have the know how and tools, but its very hard if you've not. Is it worth the risk?...