Semi-Auto, 10rd.

The last round doesn't feed. The nose is down and if I gently tap it, it pops up into position. I assume the spring is weak. I did disassemble the mag and cleaned and lubed it, but the problem persisted.

Is there a spring from another model .22 mag that will fit? I couldn't find a direct replacement spring through a google search.

Is stretching the original an option?