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

--
Tony