Figured it was the oil, I was like a child though when it came lol. I've ordered some more coils though, so I'll wipe them, do a full clean of the tank and try again with a new coil. Got the 0.2 coil but heard some real horror stories with that particular coil.Rubbery funky taste is machine oil from the tank or coil when either is first used. Crack open your coils from their foil wraps, wipe them with tiny amount of IPA or just a cloth or tissue and leave them out to air before using them.
New tanks should be washed in water as hot as you can bear and dried thoroughly before use.
Or just put up with the nasty taste for a tankful or two.
Break the coil in gently too. Fill it and leave it for half an hour, sucking on it occasionally with airflow closed without firing it to make sure juice is getting absorbed into the cotton of your coil.
Low watts (30 or so) initially, slowly building up to where the juice tastes right for you.
Treat it right, it will repay you.