I have 2 Technics SL15s w exact same cartridge in both ( no idea on which tone arm) whatever the box came with at the time suspecting . I notice that both tables produce distortion i believe mainly on the left side only , they may just need to be adjusted to get the stylus to press harder but it’s annoying ! Or your SAS upgrade may be a good option for my SL15s ...weird , I always have heard the Technics P205CMK3 were one of the better carts for that table ....thanks for your help!
I'm sorry, i thought you have SP15 , but you have SL15 with Linear Tracking toneam and P-Mount cartridge. JICO SAS is not available for P-MOUNT version of the P205cmk3. Anyway, your compact SL-15 is an interesting turntable, i always wanted to buy one, but with mk4 version of that cartridge.
The problem with automatic turntable is the service, i hope you can find someone who can service your SL-15, maybe our jpjones in NYC can do that ? If this turntable is refurbished by professional then it normally cost over $1k in good cosmetic condition. I think it's amazing turntable and i want one.
Do you like the new Technics series of DD turntables?
As for the cartridge at $1k there are many options, but you have to buy a cartridge for the tonearm. If your tonearm is not superheavy or not superlight then mid compliance cartridge is fine.