AlphalphaPB, sorry if I confused you. What I should have clarified better was that the BM 710 has stronger springs than the BM 742 and this was probably because it had a larger diameter wire used for its spring than those on the latter. As you may already know, the omega springs in the axis lock do not propel the blade open as with the usual auto opening mechanisms. Rather, stronger springs used with the axis lock will inhibit the blade from flicking open more so than weaker springs. To make it clear: "softer" (weaker) springs means a smaller diameter wire.
I have not personally done it but I read where some others have replaced their omega springs using piano wire (which I suspect may be stiffer than the stock 710 spring) out of necessity when the original springs had broken (I think BM does not sell individual knife parts). However, if you could find another source of wire material (e.g., the appropriate gauge stainless steel fishing leader?)it could be possible to rig a spring with the tension to your liking. I don't think this is an easy operation for the unskilled but it should be doable for some of the adventurous few that participate in these forums. I hope all of this makes more sense.
I have not personally done it but I read where some others have replaced their omega springs using piano wire (which I suspect may be stiffer than the stock 710 spring) out of necessity when the original springs had broken (I think BM does not sell individual knife parts). However, if you could find another source of wire material (e.g., the appropriate gauge stainless steel fishing leader?)it could be possible to rig a spring with the tension to your liking. I don't think this is an easy operation for the unskilled but it should be doable for some of the adventurous few that participate in these forums. I hope all of this makes more sense.