When I run my EA it survives without a margin call trading .01 lots with $2000. So I assume that for each $2000 that I ought to be able to exchange .01 lots. So I ran $4000 in .02 lots, $6000 in .03 lots, $8000 in .04 lots, $10,000 in .05 lots $12,000 in .06 lots and these survived the 3 month period without a margin call. Trading $14,000 in .07 lots does not survive. $20,000 in .07 does not survive. Can someone please clarify what can cause this? Thank you.