Thanks cbuk...yes I will be flying with retracts but not the DW ones...too expensive and heavy in my opinion, so I built pretty good ones from 25mm CF tubes, total weight is 650 grams and if I break them it costs 10usd to change the tubes rather than 250 for a new set of legs....also tubes are much easier to transport than the wider legs. Anyway, I think I did the same mistake with the MNs although with the information you just provided I'm thinking the mistake was with the props I chose...the MNs seem to be very sufficient at 750w.
On a related note(and I posted this on another thread as well), if you need spare MN4014-11s, I have a 5 pairs still in their sealed packs...will let them go for a really good price given that they are completely unused...if interested please PM me.
Anyway, thanks so much for sharing your experience and happy flying!!