Just cleared out a cupboard, and amongst a lot of other things I had forgotten I had I found a one piece scope mount (can't even think where I got it from, it couldn't have just arrived). No markings on it, but it is clearly a Sportsmatch adjustable for a 30mm tube scope. I don't need a 30mm mount at the moment, but I could use a 1" one for one of my Mamba Lites, and included in the plastic bag I found it in was a set of plastic inserts which seem to be intended to reduce the tube diameter to 1" I just wonder if these inserts would hold the scope firmly enough in a springer (even a well mannered one as mine are) Could anyone who has used them give an opinion please?