Removing IKEA kitchen drawers

[Tony Eva]

I want to retrofit my IKEA kitchen with those soft-closing buffers that B&Q sell, but I need to get the drawers out to drill the holes to take them and I cannot see how to release the drawer stop mechanism on the runners. I've tried lifting the drawers as I pull them out, and felt around for any latch release buttons or levers, but no luck. Can anyone help?

The kitchen's around 6 months old, silver-coloured/metal sided drawer boxes, Blum runners, if that helps. Sadly I no longer have the assembly instructions.

TIA

[Oliver]

[Tony Eva]

Do you know if IKEA will sell the buffers separately? (Though fitting the B&Q ones is easy enough, it just needs a (straight) hole in the carcase edge deep enough to take the pneumatic cylinder.)

Thanks, that gave me the confidence to use the necessary welly and they came out fine. Just needed to know that I was doing the right thing...