Issue with brand new Stringmaster Deluxe

Hello,

Following the placement issue with my previous stringmaster 3700 (side supports arms too short). I decided to upgrade to a stringmaster deluxe with Ennox tension head.

Just received it on thursday but still having issue placing the racket. The side supports arms seems not symetrical and only one side is touching the frame …
I’ve tried S_mair technic by pulling both side before tightening to avoid play and the issue is still there …

Did someone faced the same issue with this machine or it’s an issue with it and need replacemend from tennismann?