If you mine the nuggets and then lose them in an electronic file drawer, Martin Godio's article in the Fall '06 will refresh your memory on these discoveries, particularly the 3-position "no lose it" forend latch. However, I'd save JC's dissassembly guide RIGHT NOW and a hard copy is desirable backup imo.

JL, Brownell tech says they have no measurements on the mainspring kit. Can you recall the major dimensions of the "S-39". The one I need to dupe is 3/16" wide, OA length bend to end of remaining arm: 1.25", thickness of either arm at the root of the bend about 3/32".

jack