pulling to the left when braking

[onetime]

Hello, all my x is pulling to the left when braking, just put on a used right hand side caliper (drivers side) as the i could see on the old one only 1 piston moving thought this would solve it it has not. Checked the other caliper (passenger side) all seam ok not stuck, but will do a good break down over the next week, i have bled all the brake except the passenger side bleed nipple stuck need some heat on it and put a new one in. I thought i would change the pads first (might swap them over first to see if the stops and they are contaminated save some cash), then do the hoses these are cheap a few quid in the states but getting them back here cost loads, 2 hoses around £30 i think, i got 4 2in spacers from the us for £25. usa automotive is charging 28 per side.
Has anybody got an ideas on the problem as don't wnat to outlay hundreds on this.
cheers
onetime

 

[PHaTGRoB]

Hi onetime. Is it a gentle pull or does it veer off badly to the left? I assume that you've checked the wheel alignment?

 

[onetime]

hi all just an update, started off with the cheapest solution after the used caliper, stripped them back both sides at the front, slide pin, no stuck piston, looked at the brake pads and the driver side one was worn at one edge and thiner than the passenger side. changed them and no more pulling result.