I found the pool petamine looking at ttp: //p2pool-nodes.info/ and I chose it for the lowest ping.

after a couple of hours my reward was lowered again from 0.0088 to 0.0058 ... very bad for 1.5th / s.

my antminer were set with the share diff 256 (I tried 512 but I had worst results).

I'm doing something wrong or am I just unlucky? ;-)

again thanks in advance, Erik