There is a mechanic by the name of Akhtar (0300-513-5204).. his shop is opposite Askari Plaza on mall road rawalpindi (there are two cinemas; in between is a small road and only workshop on that road) .. he is reliable, honest and knows his work .. he will give you a good advice plus you can leave your car and he'll get all the work done .. charges are also fair ..
-- tooling is done when the wear is not much, it is as good as putting new disks
-- next best option is used (kabli) but u need an experts opinion to select the best ones
.. wear occurs when disks gets over heated .. there are a lot of reasons for this but remember
-- never cool the disks by throwing water (like on the way to murree)
-- only use quality disk pads