That makes a lot of sense. Thanks.

Just checked it then and it's only a few drops coming out. Just pissed cause there's been so many issues.

Brakes were fine until I engine swapped and engineer said I needed a 4040 valve. Got one from wreckers, it leaked from rubber grommet, and I ****ed one of the nuts. Got another from forum, was good for a while but eventually leaked AND by now the nut was almost round. Finally got pedders to reflate the line, but they cross threaded one of the other nuts. So finally put brand new oem valve on (3rd one) and now the reflared nut leaks... I think I'll just fully tighten it as you suggested... Sigh