MEKP is mots often diluted/thinned with something called Dimethyl phatalate, since concentrated MEKP is an explosive ...

The locally available MEKP you have is probably diluted much more than the ones Easy Composites normallly use.
Different countries seem to have different laws regarding "deactivating" explosives.
That will almost certainly mean other percentages than "normal" MEKP when added to polyesters as a catalyst.
I think you should try to find out the correct percentage of YOUR catalyst to the "standard Polyesters" that are available locally.
Your "local" MEKP could easily be diluted 5 times more than "standard"
That being said: 17 degrees C. and 13 deg. C. at night is NOT enough for a proper cure of the EC Unimould system ... You need to have 18 -20 degrees as a minimum.
Perfect example of "alligatoring" in that picture b.t.v.


I'm pretty sure your "plug" needs a better coating and thicker waxing ... NO rattle can stuff, only 2- component paint, and still weeks curing at temps lower than 20 deg.
Good luck!!
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