I'm so sorry that Jackson has a macro and, maybe, Penny too. My Kirby has all the signs too (tremors, circling, etc) though an MRI is not available in our remote rural area. It's comforting to see that macros don't seem to cause any pain and they don't know they are sick.

We started treating Kirby with Anipryl today. I have just posted to ask questions about that and maybe some answers to that thread will give you some helpful information. The members of this group are a wonderful resource and very kind to take time to share their knowledge.
Big hugs to you both, Penny and Jackson.
Aloha,
Tricia and Kirby