Two Ody top tanks stacked configuration.
This took a little creativity due to the MP's that are available. Using the 2 tanks together with the 510/ce2 MP, which I'll explain, it works nice.

First take the rebuildable atomizer and use the silicone ce2 ring between the center post and the ceramic housing, instead of the oring. Wrap your coil ground wire around this silicone washer and the ceramic housing. Wrap it all the way around fully, making sure that it stays tight in the crease between the metal and the silicone.

Then attach the positive as usual.

Take the silicone cover from a ce2, the one that is directly on the ceramic, and place it on the bottom of the post, smooth side down, as shown in the pictures. When the assembly is combined with the GGTS base this makes an excellent seal. The white ring around the post is the silicone.

DON'T use the ground ring, you'll need the space it uses to make space for the 510/ce2 MP to have room for adjustment.
Put it all together and it doesn't leak, and you have juice control, its all steel with no window.
This took a little creativity due to the MP's that are available. Using the 2 tanks together with the 510/ce2 MP, which I'll explain, it works nice.

First take the rebuildable atomizer and use the silicone ce2 ring between the center post and the ceramic housing, instead of the oring. Wrap your coil ground wire around this silicone washer and the ceramic housing. Wrap it all the way around fully, making sure that it stays tight in the crease between the metal and the silicone.

Then attach the positive as usual.

Take the silicone cover from a ce2, the one that is directly on the ceramic, and place it on the bottom of the post, smooth side down, as shown in the pictures. When the assembly is combined with the GGTS base this makes an excellent seal. The white ring around the post is the silicone.

DON'T use the ground ring, you'll need the space it uses to make space for the 510/ce2 MP to have room for adjustment.
Put it all together and it doesn't leak, and you have juice control, its all steel with no window.