Anyone ever do this to their valve?

[ta2maki]

I don't know if anyone brought this up, but that center hole goes to the dump chamber side of the on-off. Connecting the top and bottom hole, the on-off becomes useless.

[TimmyJay]

I am pretty sure that having the macro fitting in the top hole will direct the air straight to the top of the on/off.

He is going to plug the middle hole and drill out the top hole to fit the macro fitting. Not enough material to do it without putting in a plug.

[TimmyJay]

Posted pix on the original post. Still a work in progress.

[athomas]

I don't know if anyone brought this up, but that center hole goes to the dump chamber side of the on-off. Connecting the top and bottom hole, the on-off becomes useless.

The classic valve back isn't connected to the dump chamber. The retro valve is. Since the project is using a classic valve any cap on the back will work and all air has to go past the on-off pin to get to the front dump chamber.