I'm going to change my discs and pads on my Peugeot Partner. I have a little query concerning the piston retraction. In the Haynes manual it says to clamp the brake hose and use a brake bleed kit. But every other tuition shows to siphon a small amount from the brake resovoir. Which is best. Also is it essential to replace the guide pin bolts or can they be reused with a suitable relocking compound? Thanks