I've been think about putting an Optima on a semi-auto. In researching, two differnt ways to mount are advocated. The easiest is to buy a mount that fits the slide dovetail. However, the other group says that the Optima doesn't have adequate elevation and windage adjustments when done this way. They say the slide should be machined so that the sight is fitted low into the slide. The objective seems to be to have the Optima dot just above the front sight for a sight picture. Thus, the front sight serves to index and if the battery goes dead the Optima acts as a giant ghost ring. Also, since it sits low, windage and elevation adjustments are much improved. Have those of you that have used the dovetail mount experienced undesirable limitations on elevation and windage adjustments? Or, does the machining recommendations appear to be a solution to a existing problem? Has anyone machined the slide to fit an Optima low? How much machining is required, and what does a gunsmith charge for this? Does the machining impose restrictions on which pistols to choose, and if so what is the critical criteria to investigate? Thanks in advance for your replies.