david lang wrote:
Anyone have any tips on how to keep the stuff from going hard & blocking up
the nozzles? I know they supply a cap, but it always seems to be too small
once you have trimmed the nozzle.

Remove the nozzle.

Put a dob of grease on the end of the cartridge.

Screw the nozzle on again, so that grease squeezes out a little
when it's tight.