I’m not sure I know what Bruce’s "new Aluminum Base" is?
Harry
The part the longer grub screws he is sending you go into. The actual tonearm base. Bruce came out with a solid Aluminum one - very substantial difference in weight - I own one. So Bruce now offers an Aluminum Joint (Gooseneck) and Aluminum Base. I also think he is going to be doing a run on the longer I Beams too.
Just a note recalling here over coffee - past Et2 owners have put some divots into the original Carbon Fiber tonearm base from improper tonearm level adjustments. Some have even put a crack in it.
Very important when leveling the tonearm to back out the vertical bolts first then re-balance with them. It can be habit to just do the side that you think needs an adjustment. This is wrong and over time stresses the parts, and that critical base that holds all the goods. So back out the vertical bolts first, visually look to see they are not touching the base; then just re-balance them. I balance using gravity. Make the teeter totter float with a little blue tac on the weights, same weight as the cart. leave it next to table for future reference. Its been years since I have had to level adjust. That’s one of the things a better table brings.
I can recall the HW19 mk4 being frustrating in how it could go out of level fairly easy if not careful with those springs. You can go with pucks Harry - but then you will need to replace the plinth feet with springs, pneumatic feet, or some other type of isolation.
I hope you can get back to the music soon too.
Cheers Chris