S3 Li drop links for shocks (need a tap)

Hello boys and girls,
Ok so I have a pair of drop links to fit to my Li, but I need to clear the shock mount thread in one of them, does anyone know what size tap I would need for this, looked everywhere to try and find some info but to no avail and I have some taps but none that fit (typically)
thanks peeps
Ok so I have a pair of drop links to fit to my Li, but I need to clear the shock mount thread in one of them, does anyone know what size tap I would need for this, looked everywhere to try and find some info but to no avail and I have some taps but none that fit (typically)

thanks peeps
