I normally use 1.2g for an SP12 – it is the elliptical version of the SP10 – the SP14 is higher compliance. However I usually also tune a bit by ear as cartridges do seem to differ with age and condition – start at 1.2 g would be my suggestion and work up .1 g at a time!
That is great advice. I had an old stylus which I thought was defective (lots of crackling noise on one channel) – I adjusted the tracking pressure and it turns out it works fine! Thank you Peter.