Lube line leaks, Bijur parts, tubing replacement

Hi folks I have an old 1994 VF2 with a frequent 121 alarm (posted on this before). I think I've found my problem point, which is a leaky 3 way junction not too far at all from the lube pump itself. When I manually pressurize the system, I can sit for a minute and watch the lube ooze from the junction's rearmost and least accessible compression fitting. My current assumption is that the hose is just plain old and worn out, so I will need to replace it. In so doing, I will need to replace the brass compression sleeve that will be sitting inside the nylon tubing. Does anyone out there have any experience with this, and am I better off replacing every inch of tubing while I'm in there if I'm going to replace any at all? As a side note the machine has always been lubed with Vactra #2. Apparently the previous owner didn't heed the warnings Haas has since issued about it. Not sure if I should just stick with it after 23 years or make the jump. Any input appreciated!