greenax

I keep getting, what can only be described as a kinda clunking when i turn left corners and accelerate. If i take my foot off the accelerator its not so bad, but if i do press the accelerator and turn left i hear a "clunck clunck clunck clunck clunck" (obviously the faster i take the corner the faster the cluncks are) I was told the diff was on its way out and was advised to replace the gearbox (as the diff is in the gearbox), which i duly did with a recon which is still within its 6month warrenty with autobreakers.co.uk in Preston BUT the cluncking still happens?? Can anyone advise as to what this could be??