About DMPS, what do you think?

Its the statement about DMPS true? Because I know for sure I do have a problem with aluminum...

"We started chelation with DMPS and that was a mistake. Mercury won't be pulled well by DMPS if the body still has a significant burden of lead, aluminum, nickel and a couple of other metals I forget. This was confirmed by David Quig of Doctor's Data Sunday in his lecture at the AutismOne conference in Chicago. Use the DMSA first (or CaEDTA) until the Urine Toxic Metals results show little of these other metals left (which may take many months). Then switching to DMPS makes sense."