[NotYetLegend]

Changed my brake lines to stainless, fluid to DOT4, and pads to Porterfield R4's. Bled the entire system (clutch too). Brakes feel good, a little spongier than OEM initially but very firm as you push more into it, also no squeks at all yet? Didn't expect that. Haven't given them an honest workout however, no bed in process etc... Problem is a noise from the rears every time I touch the brakes going a new direction.

What I mean by this is when I tap my brakes rolling backwards down my driveway I get a bit of a bonk from the rear calipers. Again the first time I touch them after moving forward, but then it's gone until I change direction again. So its like a slop thing, something moving from side to side loosely.

I did not put the backing plates on the new pads. Very thin plates wrapped around the OEM pads. Could this be the issue? The brake pads have a little slop without this shim and slide fore/aft when torqued? Any suggestions or relevant experiences would be helpful