I would start over - go back to low sugar/starch. Do that for 1-2 weeks. Do a "reset" so to speak.
If you decide to add oil, I would not at all use corn oil - very high in pro-inflammatory Omega 6. Use flax oil if you can.
However, I might even not do the oil for now - use another fat source. I'd probably try rice bran, up to 2lb.
I have not read up carnatine in relation to EPSM, so can't help there.