I find my kite pump, over time, gets really hard to push and I can't get enough pressure in the kite. I've tried lubricating it with
- vasoline
- axle grease
- WD40
- machine oil
- suntan cream
- spit
I've cleaned the sand out and put vaso on the rubber bits. It works fine for a while but after a week or 2 it slows up again. It has an aluminium shaft. And don't tell me buy an electric one - this is my warmup but I don't want shoulders like Arny.
Any suggestions?