Thanks for your replays.
I got my kit from Hugo Markes, he's a great guy. Hugo's service is exceptional, I can relay on him for any spare part needs.
The issue is more the waiting time, in case he hasn't the parts in stock. Getting parts from outside Switzerland is a royal pain, since we are not part of the EU, and the customs-free amount is rather low. Fast Lads is an interesting option, I have to check the shipping fees.
I mean in Mat Botos eShop I see 11 pages of spare parts for the 766, in Hugo's eShop I see two pages for the 766, and Fast Lad has 5 pages for all Synergy products. So it's almost certain spares must be ordered from Mat direct, if I am in hurry. For that reason I better be sure to order the right parts in sufficient quantity, should I have to. I was thinking in the line of a little more guidance for selecting the spares to avoid data entry failures.
Have a nice day.