UM2 Upgrade kit - Problem printing rads at the base of a model

[wishbone 3]

Since upgrading to the new UM2+ upgrade kit i have noticed my printer seems to print rads at the base of the model really badly.

See below, the brown print is before i upgraded, and the green after. Okay i know the materials are different but they are both the same standard pla, just different colours, and this has been happening on all my prints since upgrading. The settings are both the same between the green and brown.

I also noticed my prints seem to curl up a load more at the edges of the early layers, before the upgrade the adhesion was really good, now not so.

Layer Height: 0.15

Speed : 2500 mm/min

Nozzle temp : 200 deg C

Bed Temp :60 deg C

Any ideas? I am wondering if the better fans/ducts are making it too cold at the edges and making it curl up and spoil that part of the print.

Adam