I have just ordered a 2nd hand r7 460 the 2 weight cartridges(2g and 14g) to compensate a slice which position do the go(heaviest near the heel?)

If you go on the Taylormade website they have full diagrams of which weights go where to get the desired effect. Hope this helps

Yeah saints you're right,

14g at the heel and 2 g at the toe gives a draw biased set-up. Reverse the weights for e neutral set-up.

The R7 weight adjustment can compensate for a slight fade, but it will never be able to adjust to cure a slice which is a swing fault.