by angeleye » Sat Jul 17, 2010 3:06 pm
they have probly been on there quite a while,and the bonding has give way ,the lining crack and after a period of time damp gets in there,and with constant changes in tempreture the linings become unstuck,its one of the reasons i said get a decent set of shoes,
slght grooving in drums will be ok,rough them up, with a bit of course emery cloth,
new drums will be required if they are worn beyond manufacturers limit,this will be obvious by the lip on the outer edge of drum,irc,1mm,