Not sure how many GK riders ever clean their bridle pulleys, but it is very important for the longevity of the bridle lines.

I have seen many bridle lines have the protective sheath worn completely off them, exposing the dyneema strands, and once this happens it's only a matter of time before the seized pulley wheel and sand and debris wears through and breaks the line.

All it takes is a small bit of maintenance to prevent line wear, here's what I do:

Before every session, as I am about to connect my front lines to the pulley pigtail:

I kneel on the one end of the bridle line

I then tightly grip the other end of the line, with the pulley between my knee and hand.

I then grab the pulley pigtail with my free hand and vigorously move the pulley back and forth at speed while pulling strongly on it.

Normally the pulley will be slow to start turning as bits of sand and dried salt will have lightly caked and frozen it.

But after a few strokes the pulley will make a squeeking sound and then free up completely.

If this does not happen, or you have not done this for a long time, you will need to grip the pulley wheel between your fingers and forcefully rotate it back and forth to free the wheel up sufficiently to then do the vigorous moving back and forth.

The GK pulley is about the best I have seen as a bridle pulley on any kite, all it needs to work properly is a bit of maintenance between sessions.

I know of kiters that have had a front bridle line snap in 20+ knots and get really badly hauled behind their looping kites, so work those pulleys!