For U47 shockmounts, you can also file the felt. It will fuzz up and you can re-smooth it after removing an appropriate amount.
UPDATE: In-stock Type 1 headbaskets are now transitioned to new factory supplier manufactured from the same original tooling I had made. The assembly and mesh alignment quality is much better now. I believe the original metal factory has actually stopped offering the single mesh headbaskets because they have too many rejects upon assembly. From the units shipped in the original production run, I estimate about 8-10% B-stock rate primarily due to mesh alignment problems.
Other notable differences. . . The finish is more consistent from unit to unit. More tool marks show in general. I'm assuming either they are using a different grit polish compound or are not leaving it on the wheel as long as the previous factory, but the first production run had a high number of units with slight pitting in the finish which is not evident in the new run. Also, the tolerances in the base piece have been tightened up a hair, so they fit just a bit more precisely to the tube for a little less wiggle.
Overall, i am happy with the improved consistency even though cost per unit is slightly higher. It was not possible to easily correct the tooling to include the "bend" in the hoop originally specified, so for now, I am staying with this process for Type 1 and Type 2 headbaskets. We are still utilizing first run Type 2 headbaskets currently from the original factory.