Sorry Sven for late reply - when I'm called to do my sons pets when he is working away for a day, it means 3 hours on the buses each way....... but that's what retired dad's are for.
Will dig it out when its light - tomorrow morning, and respond. If you want direct email (as you're a newbie here) I'm on
paultill38@gmail.com and having some me-time tomorrow!
P