I purchased a pair of OEM Romeo 2.0 lenses from ebay but the area of the lens where the retention screw is inserted is slightly oversize. The screw will not tighten even without the rubber O-ring inserted but my old lenses fit fine. Is this common for their to be slight variations? If so, does anyone have any suggestions on how to trim the edge of the lens slightly so they will fit correctly? Edit: Has anyone experienced a similar issue with the Romeo 2.0?