Had something similar to that on mt T8 AFTER it had gone in for a suspension sort out.
Thought it was because the settings had been changed.
Know what it was?
The daft sods at this suspension place (well known too) had not fully screwed in the front wheel spindle so it was out by 2mm. That meant the back and front tyre were out of line by 2mm. Undid the clamps screwed in properly, wobble disappeared!!
Ains.
