Hi Gabe
When your setting up a Toggle Link rifle to "RUN" there are lots of changes to be made. The Firing Pin Extension Rod needs polished and the Breach Block (Bolt) recess for the extension rod needs de-Burr'd. The OEM firing pin often has a business end like the leading edge of a Basket Ball and needs reprofile'd to a much smaller "point." Or .. I would suggest an after-market firing pin that includes a reduced return spring. Those changes will give you reliable ignition with a reduced Main Spring. You can also reduce the main spring by placing a small brass washer between the spring and the lower tang.
Biggest deal in your setup, slowly cycle the lever while watching the cartridge rise in the Carrier Block. The Breach Block MUST fully retract into the frame BEFORE the cartridge rim can hit the cartridge support tab at the bottom of the Bolt. The cartridge hitting that little tab will break the tab NO BUENO.
PS: Way back when I set up rifles for competition, "The Cowboys and Indian Store" offered their short stroke kits as Cartridge Specific. As in Small Bore or Large Bore which simplified the timing of the action.
If you have questions as you go thru your install be sure and holler