If you do crack the bleeder to compress the piston into its bore, then be sure to bleed that line when you're done.

I usually use the old/outgoing pad to compress piston(s)...that way you avoid potentially marring the face of the piston.

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo