What year is the car?
It looks as if you have early type bushes in a late type camber plate so the washers are not going to help.
Camber plates changed in early 1970 , which is when the profile of the inner wing was modified.
The early camber plate did have two individual loose bushes one above and one below a steel retainer that was a feature in the camber plate.
This feature was provide by making the camber plate from two pressings which were projection welded together.
The later camber plate had a much larger one piece bush that was more of an 'hour glass' style and the camber plate lost the mounting flange. The bush is always fitted into the steel housing and sold as a complete part and the housing is a one piece pressing.
Many early cars have been mistakenly fitted with the later camber plates as Porsche simply sell the later parts as an 'update' even when the correct early part is ordered.
The diameter of the bush retaining part of the later camber plate is larger than the original part and when it is fitted to an early shell restricts both the camber and caster adjustment capability.
the caster setting is most affected and if a late plate if fitted to a pre-may 1970 bodyshell the maximum caster that can be set is typically 4 degrees.
Early cars typically should be set at 6.5 degrees and any less negatively impacts on turn-in behaviour although it does lighten the steering.
It has become common practice to fit Koni Shock absorber bushes to the early camber plate and they are commonly sold as the 'correct' part but this is not accurate.
They do work but are not the same as the part originally used by Porsche but this has been NLA for some time.
We have recently re-manufactured the correct bush in an HNBR material and we are also in the process or pressing new camber plates to the original design and have made a small batch of prototype parts.
Pre-production prototype - tooling mods currently in progress
The Part Number which explain these changes are as follows;
Original rubber bush: 901.341.965.03 (This was initially used on early cars without the adjustable camber plate facility.)
Original Camber Plate: 901.341.018.01
Original Support Washer; 901.341.629.00 this washer has a smaller OD than the washer currently being supplied which fits the later camber plate mount.
Post 1970 Camber Plate: 911.341.018.00 The hourglass rubber bush is intergral to this part.
Late Support washer: 901.341.629.00 This is the same part number as the original part but the washer supplied is quite different to the part used on the early cars.
There is also another camber plate design but that was used with the Boge Hydropneumatic Struts and not relevant to this thread.