I'm have Minolta/Sony Alpha lenses that I use on my G1 with an adapter. All OK up until now, but I have a problem with my latest aquisition - the Samyang 85mm 1.4. It seems to sit in place initially but will not turn and lock. Looks like it should but it just won't. Anyone else use Sony/Minolta on their m4/3 , what adapter do you use and why on earth should the Samyang fail to fit ?