Help with Miniarm T-72B4 Turret install

I posted this question on another site with a fair amount of “experts” like Armorama:

I recently received a Miniarm T-72B4 turret and hoped to use it in a build with the Trumpeter T-72B3 Mod. 2016. Miniarm does not provide any instructions regarding the fit to the turret ring on any manufacturers kit. They simply state that it can be used on Trumpeter, Zvezda or Meng kits. The problem is the turret molding is of a larger diameter than the kit molding and they do not provide a bottom for the turret as well.

Have any of you used a Miniarm turret on a Trumpeter T-72 . kit? If you have, any and all advice would be appreciated.