This #56 has the engraving pattern I want, but is a single selective trigger. I've read that these are far less ideal as there are reliability problems. Is that correct?

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=509506659

And another question. I measured my Clabrough which fits me well, and it has drops of 1 5/8" and 2.75". How much variation can I go or do I need those exact numbers? For example, I saw a Beretta with 1 3/8" and 2" measurements- would that much difference make it fit significantly worse? Thanks!!

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