Here's if you want to truly get rid of the lspv. I had to when I went to rear discs
http://www.ttora.com/forum/showpost.php?p=2251306The prop valve is from "Flyin Miata". It comes with the 10mm adapter. Like I said, one will have to be reflared. Your local auto shop should have a reflaring tool and bender that you can rent for free.
Sounds to me though like a bleeding issue. Make sure to bleed the brakes then the lspv last. Using a mittyvac will ensure you will get all the air out the master, even without a bench bleed.
