OK got some curved mounts. (PS Just ordered some MORE curved mounts by mistake-so now I will have LOADS).
Have got a number of diferent back doors-some large, some open, some small.
have got a number of arm-wobbly-bits that are broken i.e. just one of the arms legs is broken due to me enthusiastically tightening them up!
Have on order from Amazon (good source now that Action Cameras no longer do GoPro) the following:
Side mount set
Tripod mount set
Curved sticky mounts and ditto flat
"Ribbing-the most expensive way of traveling third class"