So I am trying to loosen the leaky proportioner valve and one side came free pretty easy... but no way can I get the other side to loosen.

Are there any big secrets to loosening those brass nuts on the brake lines without hurting them????

This one is starting to get round so I quit for a while to contemplate...

Are you using a flare nut wrench? You should be. Can't remember which size (SAE/metric) those nuts are but make sure it'* an exact fit.

Its 14 mm, and believe it or not, neither Canadian Tire, nor Sears Canada sell individual 14mm flare wrenches, and their current sets don't have a 14 mm in them, eithert... at least not the sets they sell in the northern GTA.

So I finally found a set with a 14 at Home Depot of all places, but they don't sell individuals... There goes 40 bucks, and the set doesn't have a 16, which is what you need for the trans oil cooler..
Bah...

In spite of all that, the flare wrench did little... its not budging....even after days of Liquid Wrench...

This is gonna cost me a trip to the shop that I didn't think I had to make....

So what can I do that they are gonna do????