Power Disc conversion/ proportioning valve question

It absolutely does. Also, make sure that your bleeder petcocks are at the highest point of whichever item you're bleeding. I have to unbolt my calipers to rotate the bleeder to the top to get the last bit of air out of them.

Yah this ⬆️ for sure! When some people do conversions they use the wrong calipers for their orientation (front or rear mounted), if the bleeder is pointing down it’s very harder to bleed the brakes. @bahamabecomb post a picture of the front brakes on your car so we can see the calipers clearly.