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I'm not familiar with the product, don't know if the springs are usgi equivalent or not. I'm not sure if the wolf package is going to be an improvement, or possibly lead to problems you aren't experiencing with the existing springs.
The bolt springs on the 305 are the ones that are most likely to cause problems, that's where I'd be most tempted to make changes. In fact I gave into that temptation long ago and switched them out to usgi.