Ola forum people & airgun techies.
To remove the inlet valve housing from the reservoir tube on older model S400 Air Arms it appears that a special tool is needed to get to grip it for the twist. This tool thingy looks very similar to the spanner for removing the retaining nut on a grinder when replacing the cutting disk, know what I mean?
I tested my baby grinder spanner but it is a tad to wide for the fit. Where can I source the proper AA spanner for this?