1911 officer mainspring

Does anyone know where I can get a 19lb mainspring for a officer model 1911?  Ive looked and I can only find 20lb mainsprings
Thanks in advance

Just an opinion. The 20lb in the officer is like going down to an 18 in a regular 1911. I would just try the 20. That's 3 lbs under what is in there now.

Len

So is there a spring that would be equivalent to 19lbs?  21?

I just ordered the 3 spring pack from midway.  20,21, and 22lb springs

Sounds like you have it covered. I know you plan on using it for your lower. Now you know why I have so many mainsprings.

Yeah, I got the Nelson 8lb recoil spring but I am still having problems getting the 2nd round in the magazine to chamber