I use an Opticron MM4 GA ED/45 scope with SDL v2 eyepiece since jun 2018 and just noticed that the zoom can't get past about 35x zoom. I never noticed this before so maybe it was like this since the day I got it. I love the scope, great image and very lightweight, but do find this odd. I always take good care of my equipment, never dropped it or anything. Is this normal for the SDL v2 eyepiece?