Thanks for the comments fellas. It was nerve-wracking but very satisfying as postjack suggests. If the mounting piece was self-threading it would have been much easier but those tiny nuts kept slipping through my grasp! I am going to have JP check everything out this evening. Also,
JP has heard my rig enough to be able to comment on the SQ improvement/change, and I am looking forward to hearing what he thinks.
It was getting late last night by the time I had everything in place, so I only heard it at a louder volume for a short time. The rest of the evening I was playing it pretty quiet, so I am trying not to leap to conclusions without much time or ability to really hear what this cart is doing. Still, the first improvement I noticed was better range on my preamp volume control because the cart is so low output. With the Skala, even the lowest click on the attenuators was pretty loud so that is a nice change. Next, I felt that the sound had a richer, fuller, more lush presence, which is what Koetsu is known for. Jennifer Warnes sounded damn good but Lightnin' Hopkins and Ike Quebec's smokey sax sounded even better. I want to spin Sarah Vaughn and Jacintha to get a good feel for what it does with female vocals. The other thing that was already good about the rig with the Skala but seemed more "right" with the Koetsu in my limited time was the image and soundstage. It had a very natural presentation that was still precise.
Overall, I got the sense that this cart is going to make me very happy and I hope that new sound will come through on needle drops if I can get around to making some soon.