Working on a machine that has been butchered and need a few odd parts.
If you have a parts mech these parts are not normally worn or broken. 3700 mech model 1050.

Manual info:
Page 36C Item 13 part # 137911 spring, Clamp lever
Page 38C Item 13 part # 137977 lever and clamp assembly
Page 38C Item 14 part # 138033 spring, record release
Page 43C item 39 Part # 128520 spring, record clamp
Page 43C item 40 part # 133434 record clamp and pin assembly

The springs are touchy, the two have to work together, but separately if that makes any sense. These have been mangled, shortened, stretched...

I can also copy manual pages to point out the parts and email it to you if it will help.

Thanks!
Tony Miklos