if seals are holding after two months i guess they will last, how much it costed for the seals and labor charges of khardia? and yes low quality PSF might be good but ATF is a big big no, getting power steering fluid is pretty easy, leave the reservoir as it is and un bolt the top hoze from PS pump, its the pressure line to the rack, now you need to place normal rubber pipe over the opening and dump other end into empty bottle or mug what eva to collect the oil, its best done with two persons one with the PS pump holding things and other inside the car, start the car and turn the wheels side to side two three times and you will have all the fluid out, i under estimated the pressure of the pump and spilled half of oil over then engine and on floor, so keep your grip firm on pipe which you have placed on top of pump, only remove the O rings from removed pipe ends if you have them already, there are not your normal O rings, rings are bit square, yes are round but square in sense that if you cut ring it will be made of square rubber length, so watch out or have these rings on hand, now you can safely take out the reservoir bottle and flush it in reverse flow with petrol to take out any gunk on the filter. and thats pretty much it, put back the hozes, therez no need to remove the low pressure hoze, top up the reservoir and start the engine and turn steering clock to clock few times to prime the system. and there you have it, will take 800ml of oil almost but you will feel the difference on steering. flush the system after short interval if you wanna be very careful about the any left overs of the old oil.
while reading the brake issue i was also thinking of shims and there you mentioned it as i go along, i cant also think of any other thing that would have cause of such rattling, infact driver side pads of my car also rattles and i dont think that any brake pad came with shims, i dont remember the make of the pads i replaced mine with but they were malaysian, and nissin ones will be best i guess being OEM, last time when i was out shopping for pads came across price range from 800-3000, only buy metallic ones, just a tip for your next purchase of pads when ever it comes, rub the two pads together and if they create dust they are good, will wear off while braking and not get hard and wont demage the disc. and finally see if your mechanic can take shims out and put them back in proper shape if they get loosened or mis shaped.