very smart
did you use a magnetic bit to try to keep hold of all the little metal shavings you entered into the system ?
in the past , when things were on their last legs , I injected greese into ball joints with a needle gresse fitting, very little would oooze out of the needle hole, they often close themselves up unless the rubbe ris to dry
great fopr repacling or re-greesing bearings that you cant remove easily
( first use it on my motorcycle steering head bearings)
too bad some manufacturer does not add the fittings as an option, Id pay the extra 2 dollars per contol arms