There are a number of assemblers out there selling " siler " locks. I've used a number of the small siler locks over the years and have never had any ignition trouble with any of them. Large or small, they are fabulous locks. I'd look at the issues you are having as more of an individual thing and address the problems on that basis. One of my target rifles has a small siler , and I know a lot of folks who prefer that size for target work.