But you also can't tell what the insides look like without taking it apart

The Super Tigre 45 probably hasn't been run in 4 years. I think the last plane I had it was my first and last attempt at a SPAD. The 46FX has probably not run in a few years either. It is on a Seagull Spacewalker 2 that I haven't maddened yet. But it used to be on my Ultra Stick. I bought the AX for the Spacewalker, but the AX didn't like running inverted.

One day I will have these planes flying again. But since I have been off the sticks for a couple years, I am going to hook up with an instructor and use the trainer to "knock the rust off"

And today I asked the LHS to order me a Sig 4*40 kit. I will be building that in the evenings, along with a Sig Kadet Senior that I ordered new wing kit for. I still want to put a bomb drop (bomb bay) in the Senior