The main airtube ones are a mix of -113 and -016. The gauge block is -009.
Getting them all in there without knicking them on the gauge hole or trigger assy screw hole, is the trick. Get plenty of the -113 and -016 for practise.
I’ll check there the problem is that the rifle is not in the US anymore I gave it to my brother is out the country and there is no many places to get assistance.