brake lever - pull is too tight
I ride a newer road bike with Shimano 105 shifters/brake levers and the pull is nice and easy on them, making braking smooth. A friend of mine has an older road bike with middle-of-the-road levers and downtube shifters (only mention to say they aren't integrated). Okay, the problem is that it is really difficult to squeeze/pull them, making braking a chore. I would like to loosen the pull/tension in some way to make it easier to pull back on the levers and slow down.
Any ideas? I've never worked on these older style levers. I don't think there is a spring or anything. I don't know what to adjust, but they are far too hard to pull, making it difficult to brake hard or quickly, especially when pulling from the hoods.
Any suggestions are appreciated.