Hi Harry,
Have not had any need to use it & in fact have never used one before.
So whether what I have is any good or not I can’t really say. Instead I’ll keep my fingers crossed!
The kit is an Aldi one, an impulse buy, branded ‘AutoXS’.
It was only around $20. Pics lifted off another forum where the poster reckoned the kit was as good as another that had cost him twice as much.
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If anyone has experience of the Aldi kit I’d be interested to hear about it, & if I need something better would welcome recommendations.