I installed a playfield protector and yellow convolux set. Looks great. Also also installed some lior mods of which one is the bridge
Now, all this difficult stuff about lifting playfield carefull with screws etc. A good friend, thanks again Niels, told me that the bridge is only attached to the playfield with a nut from downside and screw topside.
So, set playfield vertical, remove screw holding plunger to bridge, remove the one nut from downside playfield, playfield horizontal again. Remove plastic left of bridge, remove screw holding bridge to playfield and you can take the whole bridge out. Than you can do the assembly of new bridge parts relaxed on your workbench.
I found it a lot easier (and had to take the bridge out anyway because of the Playfield protector)