[Richard L]

Can you tell what debris caused the blockage? I am very interested.

We are quite lucky to own a range of CNC machines, it looks after most of the tolerance problems from out sourcing the components.

Depending on what debris caused the blockage, we can use different cleaning agents.

You will enjoy a great deal more if you have some knowledge of how the system works. Relays should arrive today. I put a anti-surge diode on one and see it helps with the contact erosion due to arching.

Internal water injection uses five times less water and 10x more effective. I would also like to see you towing a 15-foot caravan up a hill. That will a much treasured picture.