Hi chaps,
I managed to find somebody local who would sell me 5 Zodiac values this morning. I created my own value tool by by taking a box spanner and cutting a grove in the end with an angle grinder. Here it is:
It works a charm and if you need a bit more strength you can pop a screwdriver into the holes to give it more leverage. Not needed through, the values were all just finger tight. I cleaned up off the PTFE grease as advised and replaced all values and tightened the caps well. I'd say 4 of the 5 values are perfect, I think one is loosing a little air still so I will monitor it.
To rewards the hard work I put the boat on the water in Keyhaven and took it for a blast around:
With the new carbs and all the water empties from the hull it acheived 25mph which is up from 21 last week. It was a 21 kn wind and out past hurst castle it was rather rough for a quick blast.
Thank you all very much for your help.
Ed