CFD244: Are you talking about the spring inside the drum? The one between the backing plate and the lever? Just trim a bit of that to increase the length of the short one?
Mcode: 68 cables are different from 69 cables and I have a mix of the two? Which is which?
Trimming the spring doesn't make the inner cable longer. It only will decrease the release pressure. When you pull the cable through the sheath the other end will get shorter no matter how much of the spring you cut off.