Thanks all and especially to Leo for the chelation video.
Since lead and zinc compete for the same binding sites I presume it would be a good idea to take plenty of zinc.
Im only just starting out on this topic and was intending to use DMSA, however DMPS is preferable in terms of dosing and also it crosses intracellularly where DMSA does not, acting faster. Then again some sources say DMSA is best for lead and DMPS for mercury.