Popping from drive train when switching to Reverse

[JordanSecure]

Hello all,

Ever since purchasing my Z4 there has been a popping sound when changing into reverse or back into forward gears.

I recently replaced the guibo (flex disc) and the popping has not diminished.

I did a few tests to see if it was the suspension bushings. By putting on the break and letting out the clutch, I heard the popping even when remaining stationary.

Has anyone experienced this before, any coming points besides the flex disc or support bearing.
Both have good rubber, so I don’t believe they are the culprits!

Thank you!

- Jordan