I had one on my SME309 for a short time. Same thing- the cartridge needs a higher mass tonearm. I bought a headshell weight from the UK that added mass and allowed me to raise my tonearm up. I was nearly rubbing the edge of the record before that. Overall, the cartridge tracked well once the compliance/mass was a better match and sounded pretty good. I eventually got a Benz and prefer that sound. The SME Arm and Benz cartridge are a great combo.
Denon DL103 and SME IV arm
I'd like to correspond with someone who has used a 103 with an SME IV or V arm. I just happen to have both. I know there're lots of 'experts' who don't have any experience with this combination, and that's why I want to hear from somebody who actually used these together. Mine required the use of about 1/8" of spacers when mounting, which seemed like a good thing since vinylengine says I need a few grams of weight anyhow (added up to about 5g), and now I am 'tuning' for performance. So far I am impressed with tonal quality even next to my 901 ii cartridge on main setup, but my lps seem to have more surface noise.