I’ve got about 20 flights on my Phoenix 2400, but I’ve recently had an intermittent aileron servo. Turns out there’s an in-line connector about 1/2 way out on the wing panel. Mine had partially disconnected!!! On one panel the connector was glued in and couldn’t move but on the other panel, it wasn’t glued or it came loose.
Suggest you cut the white tape at the connector location and check it. Luckily the connector was making contact during all my flights!!