Clearaudio's Distributor has recommended LP#9 in the past. I've used it on an Insider without any problem, what so ever. In fact, I've used it for 6 years on various cartridges from Benz, Koetsu, vdH, and Clearaudio without any problems.
I'd much rather use LP#9 then a polymer cleaner which may weaken the hollow shaft or leave a polymer film on the stylus. Just my 2 cents.
I'd much rather use LP#9 then a polymer cleaner which may weaken the hollow shaft or leave a polymer film on the stylus. Just my 2 cents.