Well, I stumbled over a surprising bargain on an older model (no 'D' feature) 135/2 DC. Checking the estimable Mr Vink's page it seems a bit heftier than the D version, but as far as I've been able to discover it has the same optics. The outfit I got it from (Ffordes in Scotland) offers 7 day no questions return and a six month parts and labour guarantee. My question therefore is what do I need to look out for in terms of potential flaws? I've heard that there can be issues with the DC feature calibration for example, and I'm keen to hear any advice on how to go about checking for any issues while I still have the opportunity to send it back if necessary. Thanks in advance.