I have just been given a marlin glenfield mod 60. I dont know what era it is from, thinking the late 60's to early 70's according to the person who has given it to me. The rifle is in pieces and the firing mech. is totally dismantled. I cant find any schmatics showing me how to put it back together. Any help on finding a detailed "put back together" would be very appreciated. Thank you in advance.