We're currently in a heatwave so it's been hot, windy and low humidity, which seems to have affected the tips of the pistils a bit.
Also might have a slight nitrogen deficiency. Some of the lower fan leaves have been yellowing. Added some acid compost to try and make sure the soil is in the right range to take up the nutes.
Think the pot size might also be holding her back a bit with the stretch. Will try a slightly bigger pot next time I mainline a plant.
On a positive note the canopy is looking lovely and all bud sites are now full of pistils. Needs a bit of defoliation but I'll hold off a week.