I have no camera just now but i will try to explain how to do the job, fist remove the action pivot screw,remove the action from the frame,now the part to be filed is the thin rounded plate between the spring loaded lane type extractor(this bit swivels towards the uper breachblock)and the face of the uper breachblock,now you need to measure the hight it is above the lower breachblock which it is atached solidly to( the best way to do this is with digital or dial vernia calipers)take note of the highest reading and the curve of the cam now with a fine file take .o2 of the hight of the cam this is not much so go slow and measure oftern,when you have the hight right creat the curve again by slowly filing from the curved surface to the center of the filed bit ,no need to go to the end of each curve,just mack a new curved surfac.Dont atemt this unless you have the right measuring gear if you dont have a digital or dial set of vernias borow some and get the person to show you haw to measure the curv with the depth gauge end of the vernias by yousing finger presure and tacking note of the highest reading.this worked very well in my AS spencer but as always if yours is working well leave well enough olone,the fix is so the cartrige goes into the chamber as clean as posible,before i did this the bullet would somtimes hit the top of the chamber and hang up unless you snaped the action closed now cartriges go straight in and it feels nealy the same chambering a cartrige as wen you work the action emty,just lick my original .A litle more studing revealed if the front of the curve, bit closest to the extractor is filed down to 0.06 ( keep the curve even from the high point)it also keeps the cartrige coming out of the magizine straiter,making it harder for the breachblock to dig into the bullet also inproving feeding,i have tryed this with difrent cartrige lenths from 1.515 inch to 1.62 inch and all feed much beter ,i am now confedent this fix will inprove feeding in 56-50 spencers( it does not aply to other calibers)and recomend you try it