The M1 Garand Oprod spring by Orion 7 is high quality and the only GI spec replacement part on the market. Is that new Garand you purchased from the CMP functioning properly? Is it short stroking and not picking up the next round out of the clip? In my experience a new oprod spring and clip latch spring will fix about 90% of Garand functioning issues. Replace that 60 year old spring with the correct one.