Not sure if you have the 17 or 19mm V3 mast
If it’s the 17mm and you are in a hurry then you might be able to manually modify the V2 version by @jkoljo I posted above.
Just for fun I printed the mast profile Kian posted and it’s pretty close to the V2 version.
Same thickness and width but a bit different in the curves
Print the original and use a dremel to round out the mast groove slightly on the front piece
EDIT
I made a mistake on the front piece as the Gong_V2_mast_front_clamp.STEP produces a part with a groove that is actually larger than the front of the V3 mast profile Kian posted.
and more so on the rear piece and some alteration of the nose cone slot.