hello, i no egsactly what ur on about m8 because i replaced 2 rear calipers due to the pin housing breaking off, ur betta off getting a new pin which cums in a cit costing arround £45 otherwise when you put the old pin in the new caliper it could break the eye off due to it being bent. if it wont slide in then dont force it or u will end up having to get another caliper like me lol and they cost me £150 ago for a re-cond one. its a common fault with the rear calipers cause i no sumbody who worked for lexus in hull